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This digital map database represents the distribution of carbonate bedrock mapped in the Commonwealth of Virginia and is compiled at a nominal scale of 1:250,000. The database delineates areas that are mostly carbonate bedrock, areas of mixed carbonate and non-carbonate bedrock, and areas where carbonate layers are a minor component of the bedrock.<\/SPAN><\/P><\/DIV><\/DIV><\/DIV>", "geometryType": "esriGeometryPolygon", "sourceSpatialReference": { "wkid": 4326, "latestWkid": 4326, "xyTolerance": 8.983152841195215E-9, "zTolerance": 0.001, "mTolerance": 0.001, "falseX": -400, "falseY": -400, "xyUnits": 9.999999999999999E8, "falseZ": -100000, "zUnits": 10000, "falseM": 0, "mUnits": 1 }, "copyrightText": "This spatial feature class was prepared and edited by Matthew J. Heller, using features imported and modified from Witt and others (2021) [Witt, A.C., Heller, M.J., Occhi, M.E., Spears, D.B., Lang, K.E., Berquist, C.R. 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