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     "url": "836185558cd7e8560f2d785814e47065",
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     "url": "7bbb532f53efb964e2a46a8c190d51c3",
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    {
     "label": "003 Hampshire Formation (Dh)",
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     "label": "005 Harrell-Brallier-Sherr Formations, undivided (Dhbs)",
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     "contentType": "image/png",
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     "values": [
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    {
     "label": "006 Mahantango Formation (Dm)",
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     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
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    },
    {
     "label": "007 Needmore-Marcellus Shales (Dnm)",
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     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC6Ul59MtmEPH+YyMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAACEoM+iKYNBsAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
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     ]
    },
    {
     "label": "008 Oriskany Formation (Do)",
     "url": "e643729e0a9cdff2c11484315cb93614",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC4M9mgj27C1O6oYGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGFEMhAlQCgDsegyqr/JmoQAAAABJRU5ErkJggg==",
     "contentType": "image/png",
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    {
     "label": "009 Keyser-Helderberg Formations, undivided (DSkh)",
     "url": "e3bb6cef821bf6a56ba1b416b143f4d0",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAERJREFUOI3t1CESAEAEhWFmHJfTePfdTYKwhdX8UfiGQuhzMgaq6uliADhtaOZlzN2IaPLkBRdccMEnGC+oEgBOYAy6XdJNDF6nP6srAAAAAElFTkSuQmCC",
     "contentType": "image/png",
     "height": 20,
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     "values": [
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    },
    {
     "label": "010 Tonoloway Formation (Sto)",
     "url": "f9af7d01e0ca222c7f8cf98163ecadda",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC5M9JhMtmHzd+QyMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAA4zEMjzJFc6EAAAAASUVORK5CYII=",
     "contentType": "image/png",
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     "values": [
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    {
     "label": "011 Wills Creek Formation (Swc)",
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     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAENJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC700Gsg27AdlyB6aeflUQNHDRw1cNRAnAbCiiBywJQpUxhRDIQJUAoA+0cM1aw1ZN4AAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
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     "values": [
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    },
    {
     "label": "012 Bloomsburg Formation (Sb)",
     "url": "26369afb50eaa1b8181a154b151d4443",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC5M1JtMtmHzL+UyMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAA7CEMqcdv9xQAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
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     "values": [
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    },
    {
     "label": "013 McKenzie Formation (Sm)",
     "url": "25062fe82dc20ea697c0c9ad85c53c21",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAENJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC6s8mgg27C2HRC9tPPyqIGjBo4aOGogTgNhRRA5YMqUKYwoBsIEKAUA4PUMiek7fKMAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Sm"
     ]
    },
    {
     "label": "014 Keefer Sandstone (Sk)",
     "url": "7a0ac2fb0617b6e8e890632d1906ac6b",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC7MjZlMtmGTl+QyMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAA2CUMbzD/NtUAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Sk"
     ]
    },
    {
     "label": "014 Rose Hill Formation (Srh)",
     "url": "0a4059c299b7fc379fe810ca4db429af",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC5sSJxMtmEN83MZGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGFEMhAlQCgDP0gxX/sTFBwAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Srh"
     ]
    },
    {
     "label": "015 Tuscarora Formation (St)",
     "url": "ade965ce019892795c43bc49e3c41589",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC5sy2oj27CqaVUMDAy09PKogaMGjho4aiBOA2FFEDlgypQpjCgGwgQoBQDPDwxV4AHwgQAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "St"
     ]
    },
    {
     "label": "016 Juniata Formation (Oj)",
     "url": "b0d6e247fce0bb5f580d904c0c105db8",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC4sZS4m27Duv70MDAy09PKogaMGjho4aiBOA2FFEDlgypQpjCgGwgQoBQD+1Qzgf0tWOwAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Oj"
     ]
    },
    {
     "label": "017 Martinsburg Shale (Om)",
     "url": "6f0ba117faa7db1edf2d2852d5162e07",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC6cLFJMtmG5b3oZGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGFEMhAlQCgDujwyx9P8SVgAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Om"
     ]
    },
    {
     "label": "018 Martinsburg Formation, upper member (Omu)",
     "url": "6677f62801630ccd9f311c55bfe9d0b2",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC5sk68i27Cqh20MDAy09PKogaMGjho4aiBOA2FFEDlgypQpjCgGwgQoBQDs6wysQzbI3wAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Omu"
     ]
    },
    {
     "label": "019 Martinsburg Formation, lower member (Oml)",
     "url": "85c41bb2c037ea2069f263275af3d4b0",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC5sEEkk27CGN/MZGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGFEMhAlQCgD7SAzW8o3regAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Oml"
     ]
    },
    {
     "label": "020 Chambersburg Formation (Oc)",
     "url": "f8716564eaee4ce3e49b5c9e5f843d89",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC6s8qgl27C2Hc0MDAy09PKogaMGjho4aiBOA2FFEDlgypQpjCgGwgQoBQDh+gyMs23TCgAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Oc"
     ]
    },
    {
     "label": "021 St. Paul Group, undivided (Osp)",
     "url": "4247b047a91544c6765b403ad319d02e",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC6cbDWZbMNyj+UyMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAA1p8Ma4Bx28kAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Osp"
     ]
    },
    {
     "label": "022 Pinesburg Station Dolomite (Ops)",
     "url": "77237992b59056f561ec3dbf21f97094",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC6cnDiZbMNy5+cyMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAAyTcMRAkTk9sAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Ops"
     ]
    },
    {
     "label": "023 Rockdale Run Formation (Orr)",
     "url": "22a662c9dd849cbf58dfbcc097662100",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC5s0Msi27CGS9MYGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGFEMhAlQCgDvSQyzYtm4EQAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Orr"
     ]
    },
    {
     "label": "024 Stonehenge Formation, Dam Five Member (Osdf)",
     "url": "032b1a77796bf4d40f198b1481f68b24",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC6cXDyZbMNye3MZGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGFEMhAlQCgDDBwwy0x0FpwAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Osdf"
     ]
    },
    {
     "label": "025 Stonehenge Formation, Funkstown Member (Osf)",
     "url": "1f0f2b544dbd076aa83f1ac390112163",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC7s9Osj27DyTUUMDAy09PKogaMGjho4aiBOA2FFEDlgypQpjCgGwgQoBQDU7AxmlGweJQAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Osf"
     ]
    },
    {
     "label": "026 Stonehenge Formation, Stoufferstown Member (Oss)",
     "url": "d1221bad870ff21204894fa7157db845",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAENJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC5sEGkg27CGNxC9tPPyqIGjBo4aOGogTgNhRRA5YMqUKYwoBsIEKAUA8L8Mt7MB7QYAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Oss"
     ]
    },
    {
     "label": "027 Conococheague Formation, Shady Grove Member (Ccsg)",
     "url": "26481f380bed14e0e7020b63f53fec3e",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC6cnFtFtmG5k9sYGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGFEMhAlQCgDNlgxRLCTpBQAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Ccsg"
     ]
    },
    {
     "label": "028 Conococheague Formation, Zullinger Member (Ccz)",
     "url": "149085372eb68d80276cc27f5b0c05a0",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC6cHJxLtmG5ayczMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAA2vEMeJktw0YAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Ccz"
     ]
    },
    {
     "label": "029 Conococheague Formation, Big Spring Station Member (Ccb)",
     "url": "8cfdc54082eeeb350d4c62da5f828005",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC6cbJVItmG5x+YzMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAA550MnR+dlqMAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Ccb"
     ]
    },
    {
     "label": "030 Elbrook Formation (Ce)",
     "url": "ab0642c666f0018428bb3bd8339dc85a",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC6crOdBtmG5l3YwMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAA9DwMwj9QmdEAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Ce"
     ]
    },
    {
     "label": "031 Waynesboro Formation, Chewsville Member (Cwac)",
     "url": "9de6a64386a3a0c9712427496b1d1547",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC6cbF9MtmG5B3sZGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGFEMhAlQCgDfxwyGqDItewAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Cwac"
     ]
    },
    {
     "label": "032 Waynesboro Formation, Cavetown Member (Cwak)",
     "url": "0d2773ed74c50a45b3dacf39c090b909",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC6cLJVMtmG5z+YyMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAA8e8Mu5gpsKUAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Cwak"
     ]
    },
    {
     "label": "033 Waynesboro Formation, Red Run Member (Cwar)",
     "url": "9b7d8c5e86da5dd11f7b58e3ac4f64c8",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC6czGBOtmG5DCcZGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGFEMhAlQCgBeiAsBrPWGawAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Cwar"
     ]
    },
    {
     "label": "034 Tomstown Formation, undivided (Ct)",
     "url": "3c494ace3808708c9c989dd73c3831d9",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC5MFNEj27D5by4xMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAAF3MNKEM08uYAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Ct"
     ]
    },
    {
     "label": "035 Tomstown Formation, Dargan Member (Ctd)",
     "url": "5fa668420eee353017bcbeecb7542710",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC6cmOhBtmH583cwMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAA42YMkZSN+54AAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Ctd"
     ]
    },
    {
     "label": "036 Tomstown Formation, Benevola Member (Ctb)",
     "url": "0e49a974d8586d87ff97e4269d4b0a18",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC5sM/Yg27CqszsYGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGFEMhAlQCgD3CQzKUCK6QAAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Ctb"
     ]
    },
    {
     "label": "037 Tomstown Formation, Fort Duncan Member (Ctf)",
     "url": "fcba66fd44cdbfb76cb8998ddf5814fc",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC7M/SVCtmGT2d4wMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAAzP4MUBTmlaYAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Ctf"
     ]
    },
    {
     "label": "038 Tomstown Formation, Bolivar Heights Member (Ctbh)",
     "url": "3d09f3c008135ac28e42bc2a8213751b",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC6cHGxFtmG5a48xMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAA7EYMq6UHpdUAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Ctbh"
     ]
    },
    {
     "label": "039 Antietam Formation (Ca)",
     "url": "5f375c81c873c978104fa1a85d681ef8",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC5sENEj27CGN5cYGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGFEMhAlQCgAMrA0JHbd56wAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Ca"
     ]
    },
    {
     "label": "040 Harpers Formation, undivided (Ch)",
     "url": "312804046ae11ee5ecdbef98d3f0ab13",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC7sjigm27DSFb0MDAy09PKogaMGjho4aiBOA2FFEDlgypQpjCgGwgQoBQDZ9wx1F4RjQAAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Ch"
     ]
    },
    {
     "label": "041 Harpers Formation, metasandstone (Chm)",
     "url": "1a0ab9af6fe8b1bd8978b84bc3ba60c7",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC7MZTAh27DJDGcYGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGFEMhAlQCgBswwsqGUd3rQAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Chm"
     ]
    },
    {
     "label": "042 Harpers Formation, Mont Alto Member (Chma)",
     "url": "71602324c6327f3d0232f52eefe7a1ac",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC6c7FJNtmG5e1oZGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGFEMhAlQCgDbVwx58u00VQAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Chma"
     ]
    },
    {
     "label": "043 Weverton Formation, Owens Creek Member (Cwo)",
     "url": "0945651bee02c47256cde53f9f7f5994",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC7M4OUl27AZnz8zMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAAIqMNSerpHc8AAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Cwo"
     ]
    },
    {
     "label": "044 Weverton Formation, Maryland Heights Member (Cwm)",
     "url": "a42cff6b98c825ebefe13def0c2ba212",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC7s1tMj27DSS5cYGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGFEMhAlQCgD/2gzktQQCUgAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Cwm"
     ]
    },
    {
     "label": "045 Weverton Formation, Maryland Heights Member, Wolf Knob quartzite (Cwmw)",
     "url": "5216a534b6f58b14f8a791e385ba37dd",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC5skBYk27CGp+8ZGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGFEMhAlQCgAUHw0fzpwvgAAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Cwmw"
     ]
    },
    {
     "label": "046 Weverton Formation, Buzzard Knob Member (Cwb)",
     "url": "c675939980dbab803876bdbb74ba8bc2",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC6cXJxKtmG5vbMZGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGFEMhAlQCgDSqQxgX/L04QAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Cwb"
     ]
    },
    {
     "label": "047 Loudoun Formation, undivided (CZl)",
     "url": "1c91502f7893c29962d22f15c15aab67",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC5s9fAg27DqHTsYGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGFEMhAlQCgDwKgy2/kbxowAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "CZl"
     ]
    },
    {
     "label": "048 Loudoun Formation, conglomerate (CZlc)",
     "url": "963b3a77b07bccb26a96acccae5668db",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC4ssLEh27AJR44wMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAA/6sM403pm6sAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "CZlc"
     ]
    },
    {
     "label": "049 Catoctin Formation, metarhyolite (Zcr)",
     "url": "21bad1816a5a68aff5214a49ae167802",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC4MlX5ItmGrn8ozMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAA3FMMes97tkoAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Zcr"
     ]
    },
    {
     "label": "050 Catoctin Formation, aphanitic metarhyolite (Zcra)",
     "url": "8c4b61445ed85b086f5bff86e8387f13",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC6sKUgk27CWCfMZGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGFEMhAlQCgDdDAx+u8m1yAAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Zcra"
     ]
    },
    {
     "label": "051 Catoctin Formation, metarhyolite breccia (Zcrb)",
     "url": "76d073e5c7e20ae8028214ffb4b1c446",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC5UYnhHtmH3GIQYGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGFEMhAlQCgBHoAq7rgxDggAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Zcrb"
     ]
    },
    {
     "label": "052 Catoctin Formation, flow-banded bluish-gray metarhyolite (Zcrf)",
     "url": "9b1951a26759d28cbfe50ed7f3bec4c8",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC4Mlv1FtmFrH7MxMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAA09YMYZXeoiIAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Zcrf"
     ]
    },
    {
     "label": "053 Catoctin Formation, porphyritic bluish-gray metarhyolite (Zcrp)",
     "url": "9340b26301ce46471ba2ea85f5f068e1",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEJJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC70ECPfsB2vIDTtvDxq4KiBowaOGojTQFgRRA6YMmUKI4qBMAFKAQCFvAtto07lfgAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Zcrp"
     ]
    },
    {
     "label": "054 Catoctin Formation, red metarhyolite (Zcrr)",
     "url": "0ab302be1eda4f57554a52f6bcbb8530",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC5M1BIh27D5194wMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAAGLkNLEcLf2sAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Zcrr"
     ]
    },
    {
     "label": "055 Catoctin Formation, felsic dikes (Zcdf)",
     "url": "d325349abe7b775c0db49916272e8f98",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC5seydPtmFVQg8ZGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGFEMhAlQCgDEsAw4VlsRQAAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Zcdf"
     ]
    },
    {
     "label": "056 Catoctin Formation, metabasalt (Zcm)",
     "url": "d2c79b4a860136738d17ba3eb1b91f22",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC4sTvQg27De+TsYGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGFEMhAlQCgDt1AyvY9LATQAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Zcm"
     ]
    },
    {
     "label": "057 Catoctin Formation, porphyritic metabasalt (Zcmp)",
     "url": "b90f429db73dcf784604eb8b2dc0a8bc",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC700xMh27BNl94wMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAAHfQNO+YM1dIAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Zcmp"
     ]
    },
    {
     "label": "058 Catoctin Formation, phyllite (Zcp)",
     "url": "36aaffeb5bbe42247aead1cc5ca3171d",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC5M9BAh27D5O94wMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAADmkNDjjI1R8AAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Zcp"
     ]
    },
    {
     "label": "059 Catoctin Formation, phyllite unit I (Zcp1)",
     "url": "12f88ff46fcf062de64be64888b6ce5b",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC7UE3lHtmGX3ggxMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAA598Mm5zQPJcAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Zcp1"
     ]
    },
    {
     "label": "060 Catoctin Formation, phyllite unit II (Zcp2)",
     "url": "da4531b2477419d1059645765b364429",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC7MijMm27Bpi84yMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAA+SAM0KAVGxIAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Zcp2"
     ]
    },
    {
     "label": "061 Catoctin Formation, phyllite unit III (Zcp3)",
     "url": "70acfb0acb85deb102a5ca029232a4f8",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC4MthIh27C1x94wMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAAGBcNKqgywqkAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Zcp3"
     ]
    },
    {
     "label": "062 Catoctin Formation, lavender phyllite (Zcpl)",
     "url": "a150fe07318c0ca693d1b21362e46282",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC7MjfAh27DJK7YwMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAA8aYMuiZHBJUAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Zcpl"
     ]
    },
    {
     "label": "063 Catoctin Formation, basaltic dikes (Zcb)",
     "url": "72b88242852ac176b7bb468ed364d1c5",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC5M9PAg27D5O3YwMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAA/K4M2osHNNsAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Zcb"
     ]
    },
    {
     "label": "064 Catoctin Formation, mafic dikes (Zcd)",
     "url": "0e44404b8246994c3ee467b40ec27968",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC4MfshBtmFr5X8wMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAA4rQMj9ADhuwAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Zcd"
     ]
    },
    {
     "label": "065 Swift Run Formation, undivided (Zsr)",
     "url": "c320ec5bb4fd3c845db41e819fd6114d",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC5MFPEg27D5b3YwMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAADp0NDnuKJbkAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Zsr"
     ]
    },
    {
     "label": "066 Swift Run Formation, phyllite (Zsrp)",
     "url": "243dc6db2520eb0a937df188c2a052d5",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC7MtQom27DJx9YyMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAA+ZUM0Y+P+g0AAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Zsrp"
     ]
    },
    {
     "label": "067 Swift Run Formation, quartzite (Zsrq)",
     "url": "2817cfc3ac53e3a0023add2e250a2072",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC5sTMoj27D6eZMYGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGFEMhAlQCgDbtAx6h78kxAAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Zsrq"
     ]
    },
    {
     "label": "068 Basement Gneiss Complex, leucocratic gneiss (Ygl)",
     "url": "4ff0f4a41687c302f854d5289002d1af",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC40DZQl27DT6x8zMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAAF44NKErU59AAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Ygl"
     ]
    },
    {
     "label": "069 Basement Gneiss Complex, biotite gneiss (Ygb)",
     "url": "1370d3025c4ed3bfa32a0b4f9b81102b",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC70SBQh27Ad898wMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAADoINDlWAdDEAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Ygb"
     ]
    },
    {
     "label": "070 Basement Gneiss Complex, garnet gneiss (Ygt)",
     "url": "e6d4fd7e4719ad15a8191d16ca4f0f0f",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC6MyTYm27AlU88yMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAA+YYM0YJ9sxYAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Ygt"
     ]
    },
    {
     "label": "071 Basement Gneiss Complex, hornblende gneiss (Ygh)",
     "url": "117f851ad0b9fac6dab8b6fbcfef7056",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC5MTNQj27D58y8xMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAA/OwM2+KB7PQAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Ygh"
     ]
    },
    {
     "label": "072 Basement Gneiss Complex, paragneiss (Ygp)",
     "url": "48c3eab4877ec5fdbb9b52d20c1fe721",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC5MbNAj27D5DZcYGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGFEMhAlQCgDyRAy8DD3BogAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Ygp"
     ]
    },
    {
     "label": "073 Jurassic Dikes and Sills (Jd)",
     "url": "20d36611fbd216a297453e3d48e52de3",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC6c/HAK2YblyucwMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAAnOALwwcwnfAAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Jd"
     ]
    },
    {
     "label": "074 Thermally Metamorphosed Rocks (JTrtm)",
     "url": "dba799ce7ef18028d2ede55292d15764",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC6Utw4k27CHR9czMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAAFRgNILApKvgAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "JTrtm"
     ]
    },
    {
     "label": "075 Gettysburg Formation, undivided (Trg)",
     "url": "5c877cd17634933491ab1ba72d42dc5d",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC40Tk0l27Czs2czMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAA+NkMzkwLmA4AAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Trg"
     ]
    },
    {
     "label": "076 Gettysburg Formation, conglomerate (Trgc)",
     "url": "976c40f9aa6845828a6f7995c4f1872a",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC4Mq6kh27BVLS0MDAy09PKogaMGjho4aiBOA2FFEDlgypQpjCgGwgQoBQDc9Qx9EYV8XgAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Trgc"
     ]
    },
    {
     "label": "077 Gettysburg Formation, Heidlersburg Member (Trgh)",
     "url": "e0e77eac2fc14a4899431bcf1746ee42",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC5c61NMtmHBW3oZGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGFEMhAlQCgDSRQxfhHMyhwAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Trgh"
     ]
    },
    {
     "label": "078 New Oxford Formation, undivided (Trn)",
     "url": "d434f6c7442af42037cf85c9f1aa0eb9",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC7U62wl27BL5dUMDAy09PKogaMGjho4aiBOA2FFEDlgypQpjCgGwgQoBQDjVgyPmf8UHAAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Trn"
     ]
    },
    {
     "label": "079 New Oxford Formation, sandstone (Trns)",
     "url": "c2755557c7ed032cecbe9262bbab70b7",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC4UaSgl27A3Dd0MDAy09PKogaMGjho4aiBOA2FFEDlgypQpjCgGwgQoBQD06AzCCeZt1wAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Trns"
     ]
    },
    {
     "label": "080 New Oxford Formation, Irishtown Member (Trni)",
     "url": "0aa3727770e3ec2cf2f6e5e27ed0256b",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC78lZxItmFsc+czMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAAtbYMDdmkUacAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Trni"
     ]
    },
    {
     "label": "081 Leesburg Formation (Trl)",
     "url": "420ba704146f46fa3e1359b5e67e9d17",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC78FZxItmFsa+czMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAAuzYMHRqmu1cAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Trl"
     ]
    },
    {
     "label": "082 Balls Bluff Siltstone (Trb)",
     "url": "5103123c4fb8510f5d5b165edc9560b1",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC6Uz60i27CHk9sYGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGFEMhAlQCgD16gzFFk5URwAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Trb"
     ]
    },
    {
     "label": "083 Manassas Formation, Poolesville Member (Trmp)",
     "url": "2310437de8c2831b578fb83d9e484dcf",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC60Sqwi27Bj89sYGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGFEMhAlQCgDwpwy28n7ePQAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Trmp"
     ]
    },
    {
     "label": "084 Manassas Formation, Poolesville Member, sandstone (Trmps)",
     "url": "b8da9d5ef159557cc7a064ffb7a2a7df",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC78ZZVItmFsx+YzMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAAw84MNkB8MykAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Trmps"
     ]
    },
    {
     "label": "085 Manassas Formation, Tuscarora Creek Member (Trmt)",
     "url": "1bce120afdfd2522d63a2bbe3bf61b97",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAENJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC4MLGgg27D1EyB6aeflUQNHDRw1cNRAnAbCiiBywJQpUxhRDIQJUAoA4XYMisuKqDMAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Trmt"
     ]
    },
    {
     "label": "086 Grove Formation, Woodsboro Member (Ogw)",
     "url": "77237992b59056f561ec3dbf21f97094",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC6cnDiZbMNy5+cyMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAAyTcMRAkTk9sAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Ogw"
     ]
    },
    {
     "label": "087 Grove Formation, Fountain Rock Member (Ogf)",
     "url": "93a91433936a75090ef1c5391113e857",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC6c7DGZbMNyd+QyMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAA0c8MXVGAahcAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Ogf"
     ]
    },
    {
     "label": "088 Grove Formation, Fountain Rock Member, sandstone (Ogfs)",
     "url": "7e08ef0cc22604b2b5e9ddb995ffc054",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC6crDeZbMNyL+UyMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAA2r8Md/vbsXsAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Ogfs"
     ]
    },
    {
     "label": "089 Grove Formation, Ceresville Member (Ogc)",
     "url": "4ec7f6d087923eb7d7b1dc02b6590124",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC6cLDKZbMNy3+QyMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAA468MkRVyeZAAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Ogc"
     ]
    },
    {
     "label": "090 Frederick Formation, undivided (Cfu)",
     "url": "008bce0168f99a3fc47261b1ca6ee253",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC6crMJGtmG5d34xMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAADikNDqvdcwQAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Cfu"
     ]
    },
    {
     "label": "091 Frederick Formation, Lime Kiln Member (Cfl)",
     "url": "b9e422f6ba20458874275aa253e01c4f",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC5s1bMi27DqS8cYGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGFEMhAlQCgD93Azeia5kvgAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Cfl"
     ]
    },
    {
     "label": "092 Frederick Formation, Adamstown Member (Cfa)",
     "url": "154b0d29f34e1aa50d0cab09067c3a3c",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC6cnJhItmG58+czMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAA2jUMdug9YfIAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Cfa"
     ]
    },
    {
     "label": "093 Frederick Formation, Rocky Springs Station Member (Cfr)",
     "url": "a7ffc810e919ecfe95c5df75c1b82226",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC6cbCVPtmG5xx4yMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAA/gsM35LPo38AAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Cfr"
     ]
    },
    {
     "label": "094 Frederick Formation, Rocky Springs Station Member, breccia (Cfrb)",
     "url": "0e2e6f1e4a5c5bae918872d228a516b6",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC6czMtLtmG5nz8zMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAAE7ANHidBCY8AAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Cfrb"
     ]
    },
    {
     "label": "095 Frederick Formation, Monocacy Member, shale bed (Cfms)",
     "url": "315cf5c364e522dc2165ee6a087c0de3",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC6c7CFCtmG5O94wMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAA/PgM3CejrmgAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Cfms"
     ]
    },
    {
     "label": "096 Frederick Formation, Monocacy Member (Cfm)",
     "url": "edd23fa4a0a2a14282c74ac2f444c16f",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC6crCRFtmG5954xMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAACA0M/F6EmP0AAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Cfm"
     ]
    },
    {
     "label": "097 Araby Formation (Car)",
     "url": "7aad114d3b88a81940e01eacd8fb9441",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC6cbOVDtmG5x7YwMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAA7sAMskSLr6cAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Car"
     ]
    },
    {
     "label": "098 Wakefield Marble (CZwm)",
     "url": "7dacad8d7d1d2cdd2d4a552928dd0bc6",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC6MSW4i27Alc+sYGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGFEMhAlQCgDhbQyK1drxvgAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "CZwm"
     ]
    },
    {
     "label": "099 Sams Creek Formation, metabasalt (CZscb)",
     "url": "1c153c3540ccfa46742b26b42df7df93",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC7U9ioi27Cr2/oYGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGFEMhAlQCgAAjQzkEf6NRwAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "CZscb"
     ]
    },
    {
     "label": "100 Sams Creek Formation, hematite phyllite (CZschp)",
     "url": "6c6fb5f302516272fd41ea231c8db027",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC40d48g27CTO1cwMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAABj8M9ZmLCWQAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "CZschp"
     ]
    },
    {
     "label": "101 Sams Creek Formation, metalimestone (CZscl)",
     "url": "c72ddbde21b737ecf9e79a2abc2133d4",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC5U1nMl27C7l3YzMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAAHEANNQEZdjMAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "CZscl"
     ]
    },
    {
     "label": "102 Sams Creek Formation, marble (CZscm)",
     "url": "f165d705a7759910ffc274e42de4ea27",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC7klY4k27DPT5czMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAAI6INSt0WC9oAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "CZscm"
     ]
    },
    {
     "label": "103 Sams Creek Formation, muscovite phyllite (CZscmp)",
     "url": "b9001b60bdf71298495b1bdbf330c835",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC5MSUom27A58+YyMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAA6YYMoudqR38AAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "CZscmp"
     ]
    },
    {
     "label": "104 Sams Creek Formation, quartzite (CZscq)",
     "url": "51cfed861fce9dcc3dfc9462fce419ed",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC4057El27CTXw4zMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAAI7QNS91oJ3cAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "CZscq"
     ]
    },
    {
     "label": "105 Sams Creek Formation, muscovite phyllite quartzite (CZscqp)",
     "url": "b362f93af1f4d43fa9f5397ed4444303",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC60VvEn27CjdzYyMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAAE/INHZugk+EAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "CZscqp"
     ]
    },
    {
     "label": "106 Sams Creek Formation, metasiltstone (CZscs)",
     "url": "a9c509fb81b489c2f99c9c00d6852459",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC5UEDMh27AHr84wMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAAK1INYWbz8swAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "CZscs"
     ]
    },
    {
     "label": "107 Sams Creek Formation, Silver Run Limestone Member (CZscsr)",
     "url": "2a8292b43980a5da910b2d1c80de7e15",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAERJREFUOI3t1CESAEAEhWFmHJfTePfdTYKwhdX8UfiGQuhzMgaq6uliADhtaGZlzN2JaPLkBRdccMEnGC+oEgBOYAy6Xd83DIQx7k4dAAAAAElFTkSuQmCC",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "CZscsr"
     ]
    },
    {
     "label": "108 Sams Creek Formation, tuffaceous phyllite (CZsctp)",
     "url": "5a9a95c42ebbce71a424e9bb8e2e2f17",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC5MLegk27DZE8oZGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGFEMhAlQCgDXcwxtiimltQAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "CZsctp"
     ]
    },
    {
     "label": "109 Ijamsville Phyllite, undivided (CZi)",
     "url": "8210a1f18e88022c65beb30cf73c4ae1",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC5scAgj27CGA6sYGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGFEMhAlQCgDv5Qy1njHfRwAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "CZi"
     ]
    },
    {
     "label": "110 Ijamsville Phyllite, quartzite (CZiq)",
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    {
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    },
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    {
     "label": "120 Sugarloaf Mountain Quartzite (Csq)",
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    }
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   "layerType": "Feature Layer",
   "minScale": 500000,
   "maxScale": 50000,
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     "url": "836185558cd7e8560f2d785814e47065",
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     "label": "003 Hampshire Formation (Dh)",
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     "contentType": "image/png",
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     "values": [
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    {
     "label": "006 Mahantango Formation (Dm)",
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     "contentType": "image/png",
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     "width": 20,
     "values": [
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    },
    {
     "label": "007 Needmore-Marcellus Shales (Dnm)",
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     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC6Ul59MtmEPH+YyMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAACEoM+iKYNBsAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
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     ]
    },
    {
     "label": "008 Oriskany Formation (Do)",
     "url": "e643729e0a9cdff2c11484315cb93614",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC4M9mgj27C1O6oYGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGFEMhAlQCgDsegyqr/JmoQAAAABJRU5ErkJggg==",
     "contentType": "image/png",
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    {
     "label": "009 Keyser-Helderberg Formations, undivided (DSkh)",
     "url": "e3bb6cef821bf6a56ba1b416b143f4d0",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAERJREFUOI3t1CESAEAEhWFmHJfTePfdTYKwhdX8UfiGQuhzMgaq6uliADhtaOZlzN2IaPLkBRdccMEnGC+oEgBOYAy6XdJNDF6nP6srAAAAAElFTkSuQmCC",
     "contentType": "image/png",
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     "values": [
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    },
    {
     "label": "010 Tonoloway Formation (Sto)",
     "url": "f9af7d01e0ca222c7f8cf98163ecadda",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC5M9JhMtmHzd+QyMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAA4zEMjzJFc6EAAAAASUVORK5CYII=",
     "contentType": "image/png",
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     "values": [
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    {
     "label": "011 Wills Creek Formation (Swc)",
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     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAENJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC700Gsg27AdlyB6aeflUQNHDRw1cNRAnAbCiiBywJQpUxhRDIQJUAoA+0cM1aw1ZN4AAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Swc"
     ]
    },
    {
     "label": "012 Bloomsburg Formation (Sb)",
     "url": "26369afb50eaa1b8181a154b151d4443",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC5M1JtMtmHzL+UyMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAA7CEMqcdv9xQAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Sb"
     ]
    },
    {
     "label": "013 McKenzie Formation (Sm)",
     "url": "25062fe82dc20ea697c0c9ad85c53c21",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAENJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC6s8mgg27C2HRC9tPPyqIGjBo4aOGogTgNhRRA5YMqUKYwoBsIEKAUA4PUMiek7fKMAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Sm"
     ]
    },
    {
     "label": "014 Keefer Sandstone (Sk)",
     "url": "7a0ac2fb0617b6e8e890632d1906ac6b",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC7MjZlMtmGTl+QyMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAA2CUMbzD/NtUAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Sk"
     ]
    },
    {
     "label": "014 Rose Hill Formation (Srh)",
     "url": "0a4059c299b7fc379fe810ca4db429af",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC5sSJxMtmEN83MZGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGFEMhAlQCgDP0gxX/sTFBwAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Srh"
     ]
    },
    {
     "label": "015 Tuscarora Formation (St)",
     "url": "ade965ce019892795c43bc49e3c41589",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC5sy2oj27CqaVUMDAy09PKogaMGjho4aiBOA2FFEDlgypQpjCgGwgQoBQDPDwxV4AHwgQAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "St"
     ]
    },
    {
     "label": "016 Juniata Formation (Oj)",
     "url": "b0d6e247fce0bb5f580d904c0c105db8",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC4sZS4m27Duv70MDAy09PKogaMGjho4aiBOA2FFEDlgypQpjCgGwgQoBQD+1Qzgf0tWOwAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Oj"
     ]
    },
    {
     "label": "017 Martinsburg Shale (Om)",
     "url": "6f0ba117faa7db1edf2d2852d5162e07",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC6cLFJMtmG5b3oZGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGFEMhAlQCgDujwyx9P8SVgAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Om"
     ]
    },
    {
     "label": "018 Martinsburg Formation, upper member (Omu)",
     "url": "6677f62801630ccd9f311c55bfe9d0b2",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC5sk68i27Cqh20MDAy09PKogaMGjho4aiBOA2FFEDlgypQpjCgGwgQoBQDs6wysQzbI3wAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Omu"
     ]
    },
    {
     "label": "019 Martinsburg Formation, lower member (Oml)",
     "url": "85c41bb2c037ea2069f263275af3d4b0",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC5sEEkk27CGN/MZGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGFEMhAlQCgD7SAzW8o3regAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Oml"
     ]
    },
    {
     "label": "020 Chambersburg Formation (Oc)",
     "url": "f8716564eaee4ce3e49b5c9e5f843d89",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC6s8qgl27C2Hc0MDAy09PKogaMGjho4aiBOA2FFEDlgypQpjCgGwgQoBQDh+gyMs23TCgAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Oc"
     ]
    },
    {
     "label": "021 St. Paul Group, undivided (Osp)",
     "url": "4247b047a91544c6765b403ad319d02e",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC6cbDWZbMNyj+UyMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAA1p8Ma4Bx28kAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Osp"
     ]
    },
    {
     "label": "022 Pinesburg Station Dolomite (Ops)",
     "url": "77237992b59056f561ec3dbf21f97094",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC6cnDiZbMNy5+cyMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAAyTcMRAkTk9sAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Ops"
     ]
    },
    {
     "label": "023 Rockdale Run Formation (Orr)",
     "url": "22a662c9dd849cbf58dfbcc097662100",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC5s0Msi27CGS9MYGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGFEMhAlQCgDvSQyzYtm4EQAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Orr"
     ]
    },
    {
     "label": "024 Stonehenge Formation, Dam Five Member (Osdf)",
     "url": "032b1a77796bf4d40f198b1481f68b24",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC6cXDyZbMNye3MZGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGFEMhAlQCgDDBwwy0x0FpwAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Osdf"
     ]
    },
    {
     "label": "025 Stonehenge Formation, Funkstown Member (Osf)",
     "url": "1f0f2b544dbd076aa83f1ac390112163",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC7s9Osj27DyTUUMDAy09PKogaMGjho4aiBOA2FFEDlgypQpjCgGwgQoBQDU7AxmlGweJQAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Osf"
     ]
    },
    {
     "label": "026 Stonehenge Formation, Stoufferstown Member (Oss)",
     "url": "d1221bad870ff21204894fa7157db845",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAENJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC5sEGkg27CGNxC9tPPyqIGjBo4aOGogTgNhRRA5YMqUKYwoBsIEKAUA8L8Mt7MB7QYAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Oss"
     ]
    },
    {
     "label": "027 Conococheague Formation, Shady Grove Member (Ccsg)",
     "url": "26481f380bed14e0e7020b63f53fec3e",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC6cnFtFtmG5k9sYGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGFEMhAlQCgDNlgxRLCTpBQAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Ccsg"
     ]
    },
    {
     "label": "028 Conococheague Formation, Zullinger Member (Ccz)",
     "url": "149085372eb68d80276cc27f5b0c05a0",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC6cHJxLtmG5ayczMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAA2vEMeJktw0YAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Ccz"
     ]
    },
    {
     "label": "029 Conococheague Formation, Big Spring Station Member (Ccb)",
     "url": "8cfdc54082eeeb350d4c62da5f828005",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC6cbJVItmG5x+YzMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAA550MnR+dlqMAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Ccb"
     ]
    },
    {
     "label": "030 Elbrook Formation (Ce)",
     "url": "ab0642c666f0018428bb3bd8339dc85a",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC6crOdBtmG5l3YwMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAA9DwMwj9QmdEAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Ce"
     ]
    },
    {
     "label": "031 Waynesboro Formation, Chewsville Member (Cwac)",
     "url": "9de6a64386a3a0c9712427496b1d1547",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC6cbF9MtmG5B3sZGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGFEMhAlQCgDfxwyGqDItewAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Cwac"
     ]
    },
    {
     "label": "032 Waynesboro Formation, Cavetown Member (Cwak)",
     "url": "0d2773ed74c50a45b3dacf39c090b909",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC6cLJVMtmG5z+YyMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAA8e8Mu5gpsKUAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Cwak"
     ]
    },
    {
     "label": "033 Waynesboro Formation, Red Run Member (Cwar)",
     "url": "9b7d8c5e86da5dd11f7b58e3ac4f64c8",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC6czGBOtmG5DCcZGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGFEMhAlQCgBeiAsBrPWGawAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Cwar"
     ]
    },
    {
     "label": "034 Tomstown Formation, undivided (Ct)",
     "url": "3c494ace3808708c9c989dd73c3831d9",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC5MFNEj27D5by4xMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAAF3MNKEM08uYAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Ct"
     ]
    },
    {
     "label": "035 Tomstown Formation, Dargan Member (Ctd)",
     "url": "5fa668420eee353017bcbeecb7542710",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC6cmOhBtmH583cwMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAA42YMkZSN+54AAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Ctd"
     ]
    },
    {
     "label": "036 Tomstown Formation, Benevola Member (Ctb)",
     "url": "0e49a974d8586d87ff97e4269d4b0a18",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC5sM/Yg27CqszsYGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGFEMhAlQCgD3CQzKUCK6QAAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Ctb"
     ]
    },
    {
     "label": "037 Tomstown Formation, Fort Duncan Member (Ctf)",
     "url": "fcba66fd44cdbfb76cb8998ddf5814fc",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC7M/SVCtmGT2d4wMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAAzP4MUBTmlaYAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Ctf"
     ]
    },
    {
     "label": "038 Tomstown Formation, Bolivar Heights Member (Ctbh)",
     "url": "3d09f3c008135ac28e42bc2a8213751b",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC6cHGxFtmG5a48xMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAA7EYMq6UHpdUAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Ctbh"
     ]
    },
    {
     "label": "039 Antietam Formation (Ca)",
     "url": "5f375c81c873c978104fa1a85d681ef8",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC5sENEj27CGN5cYGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGFEMhAlQCgAMrA0JHbd56wAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Ca"
     ]
    },
    {
     "label": "040 Harpers Formation, undivided (Ch)",
     "url": "312804046ae11ee5ecdbef98d3f0ab13",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC7sjigm27DSFb0MDAy09PKogaMGjho4aiBOA2FFEDlgypQpjCgGwgQoBQDZ9wx1F4RjQAAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Ch"
     ]
    },
    {
     "label": "041 Harpers Formation, metasandstone (Chm)",
     "url": "1a0ab9af6fe8b1bd8978b84bc3ba60c7",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC7MZTAh27DJDGcYGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGFEMhAlQCgBswwsqGUd3rQAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Chm"
     ]
    },
    {
     "label": "042 Harpers Formation, Mont Alto Member (Chma)",
     "url": "71602324c6327f3d0232f52eefe7a1ac",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC6c7FJNtmG5e1oZGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGFEMhAlQCgDbVwx58u00VQAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Chma"
     ]
    },
    {
     "label": "043 Weverton Formation, Owens Creek Member (Cwo)",
     "url": "0945651bee02c47256cde53f9f7f5994",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC7M4OUl27AZnz8zMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAAIqMNSerpHc8AAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Cwo"
     ]
    },
    {
     "label": "044 Weverton Formation, Maryland Heights Member (Cwm)",
     "url": "a42cff6b98c825ebefe13def0c2ba212",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC7s1tMj27DSS5cYGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGFEMhAlQCgD/2gzktQQCUgAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Cwm"
     ]
    },
    {
     "label": "045 Weverton Formation, Maryland Heights Member, Wolf Knob quartzite (Cwmw)",
     "url": "5216a534b6f58b14f8a791e385ba37dd",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC5skBYk27CGp+8ZGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGFEMhAlQCgAUHw0fzpwvgAAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Cwmw"
     ]
    },
    {
     "label": "046 Weverton Formation, Buzzard Knob Member (Cwb)",
     "url": "c675939980dbab803876bdbb74ba8bc2",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC6cXJxKtmG5vbMZGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGFEMhAlQCgDSqQxgX/L04QAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Cwb"
     ]
    },
    {
     "label": "047 Loudoun Formation, undivided (CZl)",
     "url": "1c91502f7893c29962d22f15c15aab67",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC5s9fAg27DqHTsYGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGFEMhAlQCgDwKgy2/kbxowAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "CZl"
     ]
    },
    {
     "label": "048 Loudoun Formation, conglomerate (CZlc)",
     "url": "963b3a77b07bccb26a96acccae5668db",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC4ssLEh27AJR44wMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAA/6sM403pm6sAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "CZlc"
     ]
    },
    {
     "label": "049 Catoctin Formation, metarhyolite (Zcr)",
     "url": "21bad1816a5a68aff5214a49ae167802",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC4MlX5ItmGrn8ozMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAA3FMMes97tkoAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Zcr"
     ]
    },
    {
     "label": "050 Catoctin Formation, aphanitic metarhyolite (Zcra)",
     "url": "8c4b61445ed85b086f5bff86e8387f13",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC6sKUgk27CWCfMZGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGFEMhAlQCgDdDAx+u8m1yAAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Zcra"
     ]
    },
    {
     "label": "051 Catoctin Formation, metarhyolite breccia (Zcrb)",
     "url": "76d073e5c7e20ae8028214ffb4b1c446",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC5UYnhHtmH3GIQYGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGFEMhAlQCgBHoAq7rgxDggAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Zcrb"
     ]
    },
    {
     "label": "052 Catoctin Formation, flow-banded bluish-gray metarhyolite (Zcrf)",
     "url": "9b1951a26759d28cbfe50ed7f3bec4c8",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC4Mlv1FtmFrH7MxMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAA09YMYZXeoiIAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Zcrf"
     ]
    },
    {
     "label": "053 Catoctin Formation, porphyritic bluish-gray metarhyolite (Zcrp)",
     "url": "9340b26301ce46471ba2ea85f5f068e1",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEJJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC70ECPfsB2vIDTtvDxq4KiBowaOGojTQFgRRA6YMmUKI4qBMAFKAQCFvAtto07lfgAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Zcrp"
     ]
    },
    {
     "label": "054 Catoctin Formation, red metarhyolite (Zcrr)",
     "url": "0ab302be1eda4f57554a52f6bcbb8530",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC5M1BIh27D5194wMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAAGLkNLEcLf2sAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Zcrr"
     ]
    },
    {
     "label": "055 Catoctin Formation, felsic dikes (Zcdf)",
     "url": "d325349abe7b775c0db49916272e8f98",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC5seydPtmFVQg8ZGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGFEMhAlQCgDEsAw4VlsRQAAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Zcdf"
     ]
    },
    {
     "label": "056 Catoctin Formation, metabasalt (Zcm)",
     "url": "d2c79b4a860136738d17ba3eb1b91f22",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC4sTvQg27De+TsYGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGFEMhAlQCgDt1AyvY9LATQAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Zcm"
     ]
    },
    {
     "label": "057 Catoctin Formation, porphyritic metabasalt (Zcmp)",
     "url": "b90f429db73dcf784604eb8b2dc0a8bc",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC700xMh27BNl94wMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAAHfQNO+YM1dIAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Zcmp"
     ]
    },
    {
     "label": "058 Catoctin Formation, phyllite (Zcp)",
     "url": "36aaffeb5bbe42247aead1cc5ca3171d",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC5M9BAh27D5O94wMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAADmkNDjjI1R8AAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Zcp"
     ]
    },
    {
     "label": "059 Catoctin Formation, phyllite unit I (Zcp1)",
     "url": "12f88ff46fcf062de64be64888b6ce5b",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC7UE3lHtmGX3ggxMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAA598Mm5zQPJcAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Zcp1"
     ]
    },
    {
     "label": "060 Catoctin Formation, phyllite unit II (Zcp2)",
     "url": "da4531b2477419d1059645765b364429",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC7MijMm27Bpi84yMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAA+SAM0KAVGxIAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Zcp2"
     ]
    },
    {
     "label": "061 Catoctin Formation, phyllite unit III (Zcp3)",
     "url": "70acfb0acb85deb102a5ca029232a4f8",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC4MthIh27C1x94wMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAAGBcNKqgywqkAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Zcp3"
     ]
    },
    {
     "label": "062 Catoctin Formation, lavender phyllite (Zcpl)",
     "url": "a150fe07318c0ca693d1b21362e46282",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC7MjfAh27DJK7YwMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAA8aYMuiZHBJUAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Zcpl"
     ]
    },
    {
     "label": "063 Catoctin Formation, basaltic dikes (Zcb)",
     "url": "72b88242852ac176b7bb468ed364d1c5",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC5M9PAg27D5O3YwMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAA/K4M2osHNNsAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Zcb"
     ]
    },
    {
     "label": "064 Catoctin Formation, mafic dikes (Zcd)",
     "url": "0e44404b8246994c3ee467b40ec27968",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC4MfshBtmFr5X8wMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAA4rQMj9ADhuwAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Zcd"
     ]
    },
    {
     "label": "065 Swift Run Formation, undivided (Zsr)",
     "url": "c320ec5bb4fd3c845db41e819fd6114d",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC5MFPEg27D5b3YwMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAADp0NDnuKJbkAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Zsr"
     ]
    },
    {
     "label": "066 Swift Run Formation, phyllite (Zsrp)",
     "url": "243dc6db2520eb0a937df188c2a052d5",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC7MtQom27DJx9YyMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAA+ZUM0Y+P+g0AAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Zsrp"
     ]
    },
    {
     "label": "067 Swift Run Formation, quartzite (Zsrq)",
     "url": "2817cfc3ac53e3a0023add2e250a2072",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC5sTMoj27D6eZMYGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGFEMhAlQCgDbtAx6h78kxAAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Zsrq"
     ]
    },
    {
     "label": "068 Basement Gneiss Complex, leucocratic gneiss (Ygl)",
     "url": "4ff0f4a41687c302f854d5289002d1af",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC40DZQl27DT6x8zMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAAF44NKErU59AAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Ygl"
     ]
    },
    {
     "label": "069 Basement Gneiss Complex, biotite gneiss (Ygb)",
     "url": "1370d3025c4ed3bfa32a0b4f9b81102b",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC70SBQh27Ad898wMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAADoINDlWAdDEAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Ygb"
     ]
    },
    {
     "label": "070 Basement Gneiss Complex, garnet gneiss (Ygt)",
     "url": "e6d4fd7e4719ad15a8191d16ca4f0f0f",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC6MyTYm27AlU88yMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAA+YYM0YJ9sxYAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Ygt"
     ]
    },
    {
     "label": "071 Basement Gneiss Complex, hornblende gneiss (Ygh)",
     "url": "117f851ad0b9fac6dab8b6fbcfef7056",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC5MTNQj27D58y8xMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAA/OwM2+KB7PQAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Ygh"
     ]
    },
    {
     "label": "072 Basement Gneiss Complex, paragneiss (Ygp)",
     "url": "48c3eab4877ec5fdbb9b52d20c1fe721",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC5MbNAj27D5DZcYGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGFEMhAlQCgDyRAy8DD3BogAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Ygp"
     ]
    },
    {
     "label": "073 Jurassic Dikes and Sills (Jd)",
     "url": "20d36611fbd216a297453e3d48e52de3",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC6c/HAK2YblyucwMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAAnOALwwcwnfAAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Jd"
     ]
    },
    {
     "label": "074 Thermally Metamorphosed Rocks (JTrtm)",
     "url": "dba799ce7ef18028d2ede55292d15764",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC6Utw4k27CHR9czMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAAFRgNILApKvgAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "JTrtm"
     ]
    },
    {
     "label": "075 Gettysburg Formation, undivided (Trg)",
     "url": "5c877cd17634933491ab1ba72d42dc5d",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC40Tk0l27Czs2czMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAA+NkMzkwLmA4AAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Trg"
     ]
    },
    {
     "label": "076 Gettysburg Formation, conglomerate (Trgc)",
     "url": "976c40f9aa6845828a6f7995c4f1872a",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC4Mq6kh27BVLS0MDAy09PKogaMGjho4aiBOA2FFEDlgypQpjCgGwgQoBQDc9Qx9EYV8XgAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Trgc"
     ]
    },
    {
     "label": "077 Gettysburg Formation, Heidlersburg Member (Trgh)",
     "url": "e0e77eac2fc14a4899431bcf1746ee42",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC5c61NMtmHBW3oZGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGFEMhAlQCgDSRQxfhHMyhwAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Trgh"
     ]
    },
    {
     "label": "078 New Oxford Formation, undivided (Trn)",
     "url": "d434f6c7442af42037cf85c9f1aa0eb9",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC7U62wl27BL5dUMDAy09PKogaMGjho4aiBOA2FFEDlgypQpjCgGwgQoBQDjVgyPmf8UHAAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Trn"
     ]
    },
    {
     "label": "079 New Oxford Formation, sandstone (Trns)",
     "url": "c2755557c7ed032cecbe9262bbab70b7",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC4UaSgl27A3Dd0MDAy09PKogaMGjho4aiBOA2FFEDlgypQpjCgGwgQoBQD06AzCCeZt1wAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Trns"
     ]
    },
    {
     "label": "080 New Oxford Formation, Irishtown Member (Trni)",
     "url": "0aa3727770e3ec2cf2f6e5e27ed0256b",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC78lZxItmFsc+czMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAAtbYMDdmkUacAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Trni"
     ]
    },
    {
     "label": "081 Leesburg Formation (Trl)",
     "url": "420ba704146f46fa3e1359b5e67e9d17",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC78FZxItmFsa+czMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAAuzYMHRqmu1cAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Trl"
     ]
    },
    {
     "label": "082 Balls Bluff Siltstone (Trb)",
     "url": "5103123c4fb8510f5d5b165edc9560b1",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC6Uz60i27CHk9sYGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGFEMhAlQCgD16gzFFk5URwAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Trb"
     ]
    },
    {
     "label": "083 Manassas Formation, Poolesville Member (Trmp)",
     "url": "2310437de8c2831b578fb83d9e484dcf",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC60Sqwi27Bj89sYGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGFEMhAlQCgDwpwy28n7ePQAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Trmp"
     ]
    },
    {
     "label": "084 Manassas Formation, Poolesville Member, sandstone (Trmps)",
     "url": "b8da9d5ef159557cc7a064ffb7a2a7df",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC78ZZVItmFsx+YzMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAAw84MNkB8MykAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Trmps"
     ]
    },
    {
     "label": "085 Manassas Formation, Tuscarora Creek Member (Trmt)",
     "url": "1bce120afdfd2522d63a2bbe3bf61b97",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAENJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC4MLGgg27D1EyB6aeflUQNHDRw1cNRAnAbCiiBywJQpUxhRDIQJUAoA4XYMisuKqDMAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Trmt"
     ]
    },
    {
     "label": "086 Grove Formation, Woodsboro Member (Ogw)",
     "url": "77237992b59056f561ec3dbf21f97094",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC6cnDiZbMNy5+cyMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAAyTcMRAkTk9sAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Ogw"
     ]
    },
    {
     "label": "087 Grove Formation, Fountain Rock Member (Ogf)",
     "url": "93a91433936a75090ef1c5391113e857",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC6c7DGZbMNyd+QyMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAA0c8MXVGAahcAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Ogf"
     ]
    },
    {
     "label": "088 Grove Formation, Fountain Rock Member, sandstone (Ogfs)",
     "url": "7e08ef0cc22604b2b5e9ddb995ffc054",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC6crDeZbMNyL+UyMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAA2r8Md/vbsXsAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Ogfs"
     ]
    },
    {
     "label": "089 Grove Formation, Ceresville Member (Ogc)",
     "url": "4ec7f6d087923eb7d7b1dc02b6590124",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC6cLDKZbMNy3+QyMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAA468MkRVyeZAAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Ogc"
     ]
    },
    {
     "label": "090 Frederick Formation, undivided (Cfu)",
     "url": "008bce0168f99a3fc47261b1ca6ee253",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC6crMJGtmG5d34xMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAADikNDqvdcwQAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Cfu"
     ]
    },
    {
     "label": "091 Frederick Formation, Lime Kiln Member (Cfl)",
     "url": "b9e422f6ba20458874275aa253e01c4f",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC5s1bMi27DqS8cYGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGFEMhAlQCgD93Azeia5kvgAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Cfl"
     ]
    },
    {
     "label": "092 Frederick Formation, Adamstown Member (Cfa)",
     "url": "154b0d29f34e1aa50d0cab09067c3a3c",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC6cnJhItmG58+czMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAA2jUMdug9YfIAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Cfa"
     ]
    },
    {
     "label": "093 Frederick Formation, Rocky Springs Station Member (Cfr)",
     "url": "a7ffc810e919ecfe95c5df75c1b82226",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC6cbCVPtmG5xx4yMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAA/gsM35LPo38AAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Cfr"
     ]
    },
    {
     "label": "094 Frederick Formation, Rocky Springs Station Member, breccia (Cfrb)",
     "url": "0e2e6f1e4a5c5bae918872d228a516b6",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC6czMtLtmG5nz8zMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAAE7ANHidBCY8AAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Cfrb"
     ]
    },
    {
     "label": "095 Frederick Formation, Monocacy Member, shale bed (Cfms)",
     "url": "315cf5c364e522dc2165ee6a087c0de3",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC6c7CFCtmG5O94wMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAA/PgM3CejrmgAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Cfms"
     ]
    },
    {
     "label": "096 Frederick Formation, Monocacy Member (Cfm)",
     "url": "edd23fa4a0a2a14282c74ac2f444c16f",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC6crCRFtmG5954xMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAACA0M/F6EmP0AAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Cfm"
     ]
    },
    {
     "label": "097 Araby Formation (Car)",
     "url": "7aad114d3b88a81940e01eacd8fb9441",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC6cbOVDtmG5x7YwMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAA7sAMskSLr6cAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Car"
     ]
    },
    {
     "label": "098 Wakefield Marble (CZwm)",
     "url": "7dacad8d7d1d2cdd2d4a552928dd0bc6",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC6MSW4i27Alc+sYGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGFEMhAlQCgDhbQyK1drxvgAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "CZwm"
     ]
    },
    {
     "label": "099 Sams Creek Formation, metabasalt (CZscb)",
     "url": "1c153c3540ccfa46742b26b42df7df93",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC7U9ioi27Cr2/oYGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGFEMhAlQCgAAjQzkEf6NRwAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "CZscb"
     ]
    },
    {
     "label": "100 Sams Creek Formation, hematite phyllite (CZschp)",
     "url": "6c6fb5f302516272fd41ea231c8db027",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC40d48g27CTO1cwMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAABj8M9ZmLCWQAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "CZschp"
     ]
    },
    {
     "label": "101 Sams Creek Formation, metalimestone (CZscl)",
     "url": "c72ddbde21b737ecf9e79a2abc2133d4",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC5U1nMl27C7l3YzMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAAHEANNQEZdjMAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "CZscl"
     ]
    },
    {
     "label": "102 Sams Creek Formation, marble (CZscm)",
     "url": "f165d705a7759910ffc274e42de4ea27",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC7klY4k27DPT5czMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAAI6INSt0WC9oAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "CZscm"
     ]
    },
    {
     "label": "103 Sams Creek Formation, muscovite phyllite (CZscmp)",
     "url": "b9001b60bdf71298495b1bdbf330c835",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC5MSUom27A58+YyMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAA6YYMoudqR38AAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "CZscmp"
     ]
    },
    {
     "label": "104 Sams Creek Formation, quartzite (CZscq)",
     "url": "51cfed861fce9dcc3dfc9462fce419ed",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC4057El27CTXw4zMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAAI7QNS91oJ3cAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "CZscq"
     ]
    },
    {
     "label": "105 Sams Creek Formation, muscovite phyllite quartzite (CZscqp)",
     "url": "b362f93af1f4d43fa9f5397ed4444303",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC60VvEn27CjdzYyMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAAE/INHZugk+EAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "CZscqp"
     ]
    },
    {
     "label": "106 Sams Creek Formation, metasiltstone (CZscs)",
     "url": "a9c509fb81b489c2f99c9c00d6852459",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC5UEDMh27AHr84wMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAAK1INYWbz8swAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "CZscs"
     ]
    },
    {
     "label": "107 Sams Creek Formation, Silver Run Limestone Member (CZscsr)",
     "url": "2a8292b43980a5da910b2d1c80de7e15",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAERJREFUOI3t1CESAEAEhWFmHJfTePfdTYKwhdX8UfiGQuhzMgaq6uliADhtaGZlzN2JaPLkBRdccMEnGC+oEgBOYAy6Xd83DIQx7k4dAAAAAElFTkSuQmCC",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "CZscsr"
     ]
    },
    {
     "label": "108 Sams Creek Formation, tuffaceous phyllite (CZsctp)",
     "url": "5a9a95c42ebbce71a424e9bb8e2e2f17",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC5MLegk27DZE8oZGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGFEMhAlQCgDXcwxtiimltQAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "CZsctp"
     ]
    },
    {
     "label": "109 Ijamsville Phyllite, undivided (CZi)",
     "url": "8210a1f18e88022c65beb30cf73c4ae1",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC5scAgj27CGA6sYGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGFEMhAlQCgDv5Qy1njHfRwAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "CZi"
     ]
    },
    {
     "label": "110 Ijamsville Phyllite, quartzite (CZiq)",
     "url": "1346e0993029f0660ee735a1cfdba0da",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC4MFhEh27C1b94wMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAAJScNUCsyNUsAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "CZiq"
     ]
    },
    {
     "label": "111 Ijamsville Phyllite, metabasalt (CZib)",
     "url": "b5594647dc4f2346ac7724fa537e00e3",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC4MDBIl27D1614zMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAAEDINEwkQSeAAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "CZib"
     ]
    },
    {
     "label": "112 Ijamsville Phyllite, conglomeratic metagraywacke (CZic)",
     "url": "c31f8840103cec581e4d2bdc56dcfa5b",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC7Mlbci27DJD48xMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAAC2sNBeSoGlcAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "CZic"
     ]
    },
    {
     "label": "113 Ijamsville Phyllite, metalimestone (CZil)",
     "url": "7e4f6982bc75bfe1f54666c5b6d90aee",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC7UFv5FtmFX37IxMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAA5S4Mk3njXrMAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "CZil"
     ]
    },
    {
     "label": "114 Ijamsville Phyllite, marble (CZim)",
     "url": "d906db50cf8b0590f024ea98ba218358",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC5MlPcg27D5D3cwMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAACtUNA8PF8kkAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "CZim"
     ]
    },
    {
     "label": "115 Ijamsville Phyllite, chlorite phyllite (CZip)",
     "url": "2ca19eef9498a9e2f3f443ed0c8c1e64",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC5M1TMn27DZl04yMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAAChANARjV4cIAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "CZip"
     ]
    },
    {
     "label": "116 Marburg Formation (CZmb)",
     "url": "b35535e52966e8aff62e93f1888db319",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC4M1vMg27C1l3YwMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAACosNAuNbyIAAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "CZmb"
     ]
    },
    {
     "label": "117 Marburg Formation (CZmbq)",
     "url": "c01e0d0f21b6929d0e289f815750d794",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC7U1BUh27Drl98wMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAAKykNYfjg3wEAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "CZmbq"
     ]
    },
    {
     "label": "118 Urbana Formation (Cu)",
     "url": "accad3e3dee861f89ebe7d235abcd0f0",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC6cHBxMtmG5a9cyMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAA48cMkua2nUcAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Cu"
     ]
    },
    {
     "label": "119 Urbana Formation, quartzite (Cuq)",
     "url": "c7556f0fac3430d6fd5b3be64227581d",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC6cbGVFtmG5x44xMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAA9N4MxP2dlAEAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Cuq"
     ]
    },
    {
     "label": "120 Sugarloaf Mountain Quartzite (Csq)",
     "url": "7081749943939afc4f92105c66e60d2a",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEZJREFUOI1jYaAyYKGZgTk5Of8pNWzKlCmMKC6c7JNKtmG5W2YzMDDQ0sujBo4aOGrgqIE4DYQVQeSAKVOmMKIYCBOgFAAA4BEMhz8nlZcAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Csq"
     ]
    }
   ]
  }
 ]
}