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"90c5878a5ab4f127d087c8f4127e0956", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAANUlEQVQ4je3MsREAMAgCQLljY+dwZlNbQxd+gOdub5kAA5YZE8qoF1dCHQ3HkVDHD0Ng4BwfWMQE4dzsVAwAAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 20, "width": 20, "values": [ "Dolomite", "Dolomite and shale", "Dolomite, anhydrite, gypsum, salt, and shale", "Dolomite, limestone, and shale", "Dolomite, sandstone, and shale", "Dolomite, shale, limestone, and sandstone" ] }, { "label": "Limestone", "url": "065bed729447c4468bbf346d25fe206a", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAOUlEQVQ4je3MMREAMAgDQHIXCxhCeA1VBJ2Zk628gGff02GCLDDMuKGMejFtqKPhGDbU8cMQWXCOD1hqBKohnRowAAAAAElFTkSuQmCC", "contentType": "image/png", "groupId": "0", "height": 20, "width": 20, "values": [ "Limestone", "Limestone (60 percent) and shale, interbedded", "Limestone and dolomite", "Limestone and shale, interbedded", "Limestone, dolomite, chert, and shale", "Limestone, shale, and dolomite" ] }, { "label": "Sandstone", "url": "d55650beb35a899343a859ae06a87e20", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAOElEQVQ4je3MsQ0AMAgDMCLlHW6suLEH0Zk52YoPMPueDhNkgWHGDWXUi2lDHQ3HsKGOH4bIgnN8WTAFASkCRgwAAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 20, "width": 20, "values": [ "Sandstone and conglomerate", "Sandstone, siltstone, and shale" ] }, { "label": "Siltstone", "url": "e9c744c244d351bc84d5da975bc52965", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAOklEQVQ4jWM525n2n4FKwLh8FiMLA5UBy6iBFAMWyo1ABaMGUg5YqGAGChg1kHLAMgINNC6fxUhNEwFbCAWWqXExJQAAAABJRU5ErkJggg==", "contentType": "image/png", "groupId": "0", "height": 20, "width": 20, "values": [ "Shale, siltstone, mudstone, sandstone, limestone, and coal" ] }, { "label": "Mudstone", "url": "c2f77dd59a2ca0a821b3104b1dd6a14d", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAOUlEQVQ4je3MMREAMAgDQLiLNDyhoZ7irZ2Zk628gMepumHSZCLMsKEMejFtqIPhGDbU4cOwyXSOD10rBkHJ/eWIAAAAAElFTkSuQmCC", "contentType": "image/png", "groupId": "0", "height": 20, "width": 20, "values": [ "Mudstone, shale, siltstone, sandstone, and sparse thin beds of nonmarine limestone and coal" ] } ], "legendGroups": [ { "id": "0", "heading": "Lithology" } ] } ] }