{
 "layers": [
  {
   "layerId": 0,
   "layerName": "BedrockGeology",
   "layerType": "Feature Layer",
   "minScale": 0,
   "maxScale": 0,
   "legend": [
    {
     "label": "Cretaceous - Manson Gp. Impact Structure (Kmt)",
     "url": "938ef229dd2dcda8a0e594e945401b61",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAADFJREFUOI1jYaAyYKGZge2nWv5TYlClWQ0jioHUAqMGjho4auCogXQ2EFaeUc1AagEAFp8FfcFGmGEAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Kmt"
     ]
    },
    {
     "label": "Cretaceous - Manson Gp. Moat (Kmm)",
     "url": "9a5315a90da6c202ce6b698f0bd1d29f",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAADFJREFUOI1jYaAyYKGZges+r/5PiUFBvKGMKAZSC4waOGrgqIGjBtLZQFh5RjUDqQUA7agFBs81G6kAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Kmm"
     ]
    },
    {
     "label": "Cretaceous - Manson Gp. Central Peak (Kmc)",
     "url": "6282a63ead7e19cded156f87004854ca",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAADFJREFUOI1jYaAyYKGZgVd/HPlPiUHaHDaMKAZSC4waOGrgqIGjBtLZQFh5RjUDqQUA1eIEwXAATjAAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Kmc"
     ]
    },
    {
     "label": "Cretaceous - Niobrara Fm. (Kn)",
     "url": "94171eddfa8e4d397a3024ae0e234022",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAADFJREFUOI1jYaAyYKGZge6Nrv8pMWhn/W5GFAOpBUYNHDVw1MBRA+lsIKw8o5qB1AIAW2AGRXO6nIwAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Kn"
     ]
    },
    {
     "label": "Cretaceous - Fort Benton Gp. (Kf)",
     "url": "0e036295eeddae790c2c68db7af89b7f",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAADFJREFUOI1jYaAyYKGZgfl38v9TYtBElYmMKAZSC4waOGrgqIGjBtLZQFh5RjUDqQUAH+oFmDrkRJEAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Kf"
     ]
    },
    {
     "label": "Cretaceous - Dakota, Windrow (Kd)",
     "url": "2942048ce222e0cf7fcda3daa8df5742",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAADFJREFUOI1jYaAyYKGZgW1/G/9TYlAVcz0jioHUAqMGjho4auCogXQ2EFaeUc1AagEABnUFTq8df00AAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Kd"
     ]
    },
    {
     "label": "Jurassic - Fort Dodge Fm. (Jf)",
     "url": "5355b296921190bd0ab2f0a62f701f02",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAADFJREFUOI1jYaAyYKGZgX//vflPiUHMTCKMKAZSC4waOGrgqIGjBtLZQFh5RjUDqQUAuFIEa07wbykAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Jf"
     ]
    },
    {
     "label": "Pennsylvanian - Waubonsee Gp. (Pw)",
     "url": "ba51fda7c746cffdf45536857f56afad",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAADFJREFUOI1jYaAyYKGZgU1Znv8pMahu2nZGFAOpBUYNHDVw1MBRA+lsIKw8o5qB1AIATWkGHRwJe60AAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Pw"
     ]
    },
    {
     "label": "Pennsylvanian - Shawnee Gp. (Ps)",
     "url": "170914746df00387146792d622f20429",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAADFJREFUOI1jYaAyYKGZgbNq/P9TYlBay0ZGFAOpBUYNHDVw1MBRA+lsIKw8o5qB1AIAPNcF7R30twkAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Ps"
     ]
    },
    {
     "label": "Pennsylvanian - Douglas Gp. (Pd)",
     "url": "159fe55d8357352166cf9db7781d075e",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAADFJREFUOI1jYaAyYKGZgQsz1f9TYlD89JuMKAZSC4waOGrgqIGjBtLZQFh5RjUDqQUATogGIZJkYTkAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Pd"
     ]
    },
    {
     "label": "Pennsylvanian - Lansing Gp. (Pl)",
     "url": "b1df6863320ea3f4314d0df9a0e5b843",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAADFJREFUOI1jYaAyYKGZgSvKrP5TYlBE1zFGFAOpBUYNHDVw1MBRA+lsIKw8o5qB1AIAQSwF+kJZ+lIAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Pl"
     ]
    },
    {
     "label": "Pennsylvanian - Kansas City Gp. (Pk)",
     "url": "8d042b857d37531a315eb6f247766a1e",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAADFJREFUOI1jYaAyYKGZgfu6bP9TYpBT2WFGFAOpBUYNHDVw1MBRA+lsIKw8o5qB1AIAMaEFzSk9BaAAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Pk"
     ]
    },
    {
     "label": "Pennsylvanian - Bronson Gp. (Pb)",
     "url": "dc643947c8b94faf4eecc71378927883",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAADFJREFUOI1jYaAyYKGZgQemh/2nxCCHzFWMKAZSC4waOGrgqIGjBtLZQFh5RjUDqQUAI/gFpTRpiswAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Pb"
     ]
    },
    {
     "label": "Pennsylvanian - Marmaton Gp. (Pm)",
     "url": "3307e2c2ffb88f5f1d8f578525f214e4",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAADFJREFUOI1jYaAyYKGZgVeWZP+nxCCdmKmMKAZSC4waOGrgqIGjBtLZQFh5RjUDqQUAEWkFb+caelsAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Pm"
     ]
    },
    {
     "label": "Pennsylvanian - U. Cherokee Gp. (Pcu)",
     "url": "28fa615f79b3ebd7dcf50d7a7d26fbd9",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAADFJREFUOI1jYaAyYKGZgXcONP6nxCAVh3pGFAOpBUYNHDVw1MBRA+lsIKw8o5qB1AIA/XgFNZBagr0AAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Pcu"
     ]
    },
    {
     "label": "Pennsylvanian - L. Cherokee Gp. (Pcl)",
     "url": "814e061ff87dad41b49b39808b02c131",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAADFJREFUOI1jYaAyYKGZgf/ervhPiUFMwhGMKAZSC4waOGrgqIGjBtLZQFh5RjUDqQUA1O0Ev9bIDw4AAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Pcl"
     ]
    },
    {
     "label": "Mississippian - Pella, St. Louis Fm. (Ms)",
     "url": "2f3fc8f02037a9298e1cdd34af35606d",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAADFJREFUOI1jYaAyYKGZgUJTO/5TYtC77ApGFAOpBUYNHDVw1MBRA+lsIKw8o5qB1AIAUCgGI6+Ij3kAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Ms"
     ]
    },
    {
     "label": "Mississippian - Augusta Fm. (Ma)",
     "url": "914be5e8f9085e667aa69f26c11d8d36",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAADFJREFUOI1jYaAyYKGZgaHLO/9TYtDqyHJGFAOpBUYNHDVw1MBRA+lsIKw8o5qB1AIAMlYFzR6qfyQAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Ma"
     ]
    },
    {
     "label": "Mississippian - Gilmore City Fm. (Mg)",
     "url": "e893164198f7d739d525495be15d9ff8",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAADFJREFUOI1jYaAyYKGZgb43NvynxKDNGgGMKAZSC4waOGrgqIGjBtLZQFh5RjUDqQUAFwUFfSy2tVoAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Mg"
     ]
    },
    {
     "label": "Mississippian - Kinderhookian (Mk)",
     "url": "621e6e48a23ecf67e0e5b317c5fa1c13",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAADFJREFUOI1jYaAyYKGZgQ3/H/6nxKAGRnlGFAOpBUYNHDVw1MBRA+lsIKw8o5qB1AIA5ywE8u1UsmcAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Mk"
     ]
    },
    {
     "label": "Devonian - Fammenian (Df)",
     "url": "fb2333c3bdbf87c1f24b5746824400a7",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAADFJREFUOI1jYaAyYKGZgbu6Hv2nxCC3MjlGFAOpBUYNHDVw1MBRA+lsIKw8o5qB1AIA+uMFLMsvBjsAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Df"
     ]
    },
    {
     "label": "Devonian - Lime Creek Fm. (Dl)",
     "url": "7894281e7329b74a34cea7a9af32a1a1",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAADFJREFUOI1jYaAyYKGZgXdXfvtPiUHK4VyMKAZSC4waOGrgqIGjBtLZQFh5RjUDqQUA3UQE1ikZIa8AAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Dl"
     ]
    },
    {
     "label": "Devonian - Cedar Valley Gp. (Dc)",
     "url": "6c5b935f1b8be4edc74e052c16324674",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAADFJREFUOI1jYaAyYKGZgW2n3v2nxKAqMyFGFAOpBUYNHDVw1MBRA+lsIKw8o5qB1AIA8uMFFGtbqr0AAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Dc"
     ]
    },
    {
     "label": "Devonian - Wapsipinicon Gp. (Dw)",
     "url": "4d818911022c1315c4dea32212a15738",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAADFJREFUOI1jYaAyYKGZgS+e//tPiUESkkyMKAZSC4waOGrgqIGjBtLZQFh5RjUDqQUAwWkEhfra1PoAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Dw"
     ]
    },
    {
     "label": "Silurian - LaPorte City Fm. (Sl)",
     "url": "b7fb26527a08dfe72bcd2932d07516f6",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAADFJREFUOI1jYaAyYKGZgRfrGf5TYpB+IwMjioHUAqMGjho4auCogXQ2EFaeUc1AagEARS8EAj6Ulz0AAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Sl"
     ]
    },
    {
     "label": "Silurian - Gower Fm. (Sg)",
     "url": "aea71c3ed2b7b07b15ba5351135576dd",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAADFJREFUOI1jYaAyYKGZgX+nOPynxCDmnAOMKAZSC4waOGrgqIGjBtLZQFh5RjUDqQUAF0UFgXZTwU8AAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Sg"
     ]
    },
    {
     "label": "Silurian - Scotch Grove Fm. (Ss)",
     "url": "110b79a33200dcdaa0e127476888aeeb",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAADFJREFUOI1jYaAyYKGZgf/WMPynxCCmEAZGFAOpBUYNHDVw1MBRA+lsIKw8o5qB1AIAJhIDqLT6piAAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Ss"
     ]
    },
    {
     "label": "Silurian - Hopkinton, etc. (Sh)",
     "url": "347053ea786ca9a650493e1e5fa96db5",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAADFJREFUOI1jYaAyYKGZgX8vxv6nxCBm/cWMKAZSC4waOGrgqIGjBtLZQFh5RjUDqQUA+GMFJ2YTMYsAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Sh"
     ]
    },
    {
     "label": "Silurian - Waucoma Fm. (Sw)",
     "url": "8f12e22275338ab6c8d94f454648da7c",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAADFJREFUOI1jYaAyYKGZgX9vLPlPiUHMGjGMKAZSC4waOGrgqIGjBtLZQFh5RjUDqQUA3doE2SaE96QAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Sw"
     ]
    },
    {
     "label": "Ordovician - Maquoketa (Om)",
     "url": "f5395943d4866c72947970673315f8da",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAADFJREFUOI1jYaAyYKGZgS+btv6nxCDxOm9GFAOpBUYNHDVw1MBRA+lsIKw8o5qB1AIA/JcFMp9MrIsAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Om"
     ]
    },
    {
     "label": "Ordovician - Galena, Platteville (Og)",
     "url": "4287f5c7d55b79c816eb2dcbef103539",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAADFJREFUOI1jYaAyYKGZgf/3vfhPiUGMThKMKAZSC4waOGrgqIGjBtLZQFh5RjUDqQUAzvwErTwO+XQAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Og"
     ]
    },
    {
     "label": "Ordovician - St. Peter, Prairie du Chien (Op)",
     "url": "050a2ec8a650ad93bcd5cfd9456b79bf",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAADFJREFUOI1jYaAyYKGZgb9u/PtPiUFsGkyMKAZSC4waOGrgqIGjBtLZQFh5RjUDqQUAwE8Egk01sj8AAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Op"
     ]
    },
    {
     "label": "Cambrian - Jordan, St. Lawrence, Lone Rock (Cj)",
     "url": "b6799e53a9bc1e37e28e8c9ba34920d9",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAADFJREFUOI1jYaAyYKGZgVdPmP+nxCBti5OMKAZSC4waOGrgqIGjBtLZQFh5RjUDqQUAFlwFft+/KtAAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Cj"
     ]
    },
    {
     "label": "Cambrian - Wonewoc Frm. (Cw)",
     "url": "f7a51d70c088a769f9659cd918431f68",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAADFJREFUOI1jYaAyYKGZge/fOP2nxCBBkX2MKAZSC4waOGrgqIGjBtLZQFh5RjUDqQUA/SYFNbL7GvYAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Cw"
     ]
    },
    {
     "label": "Cambrian - Eau Claire Fm. (Ce)",
     "url": "5d11c471d7cdc40dbfe24bdd0488412b",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAADFJREFUOI1jYaAyYKGZgf++TvhPiUFM3AWMKAZSC4waOGrgqIGjBtLZQFh5RjUDqQUA2lUEz6iVrLwAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Ce"
     ]
    },
    {
     "label": "Cambrian - Mt. Simon Fm. (Cm)",
     "url": "f224f735aee080c476002a5e84af37c7",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAADFJREFUOI1jYaAyYKGZgf9+HPpPiUFMHHaMKAZSC4waOGrgqIGjBtLZQFh5RjUDqQUAyE8EmohsjqAAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Cm"
     ]
    },
    {
     "label": "Precambrian - Sioux Quartzite Fm. (Xs)",
     "url": "7df20c63fb9dc42e96478c89fb4e4531",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAADFJREFUOI1jYaAyYKGZgXcYGP5TYpAKAwMjioHUAqMGjho4auCogXQ2EFaeUc1AagEAbKoCdlZ7G7cAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Xs"
     ]
    }
   ]
  }
 ]
}