20241004 15170800 1.0 FALSE CarbonateRock 009 -83.675395 -76.305395 36.544789 39.453066 1 Geographic GCS_WGS_1984 Angular Unit: Degree (0.017453) <GeographicCoordinateSystem xsi:type='typens:GeographicCoordinateSystem' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xmlns:xs='http://www.w3.org/2001/XMLSchema' xmlns:typens='http://www.esri.com/schemas/ArcGIS/3.1.0'><WKT>GEOGCS[&quot;GCS_WGS_1984&quot;,DATUM[&quot;D_WGS_1984&quot;,SPHEROID[&quot;WGS_1984&quot;,6378137.0,298.257223563]],PRIMEM[&quot;Greenwich&quot;,0.0],UNIT[&quot;Degree&quot;,0.0174532925199433],AUTHORITY[&quot;EPSG&quot;,4326]]</WKT><XOrigin>-400</XOrigin><YOrigin>-400</YOrigin><XYScale>999999999.99999988</XYScale><ZOrigin>-100000</ZOrigin><ZScale>10000</ZScale><MOrigin>0</MOrigin><MScale>1</MScale><XYTolerance>8.983152841195215e-09</XYTolerance><ZTolerance>0.001</ZTolerance><MTolerance>0.001</MTolerance><HighPrecision>true</HighPrecision><LeftLongitude>-180</LeftLongitude><WKID>4326</WKID><LatestWKID>4326</LatestWKID></GeographicCoordinateSystem> 20241011 16520200 20241011 16561700 150000000 5000 FGDC Anne Carter Witt Virginia Department of Energy, Geology and Mineral Resources Program Geologist 434-951-6319 900 Natural Resources Drive, Suite 500 Charlottesville VA 22903 anne.witt@energy.virginia.gov 20241011 ArcGIS Metadata 1.0 Enterprise Geodatabase Feature Class CarbonateBedrock 2021-11-30 1.0 Witt, A.C., Heller, M.J., Occhi, M.E., Spears, D.B., Lang, K.E., Berquist, C.R. Jr., and Prince, P.S., editors Virginia Department of Energy Virginia vector digital data <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>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> This digital map feature class shows areas of carbonate bedrock identified on the statewide geologic map database of Virginia compiled by Witt and others (2021) [Witt, A.C., Heller, M.J., Occhi, M.E., Spears, D.B., Lang, K.E., Berquist, C.R. Jr., and Prince, P.S., editors, 2021, Statewide Geologic Map Database of Virginia: Virginia Department of Energy, Geology and Mineral Resources Program, Open-file Report 2021-12, 1:250,000-scale map]. It is intended to provide the generalized distribution of consolidated bedrock that contains or may contain carbonate material. The features are compiled from 1:24,000- to 1:250,000-scale geologic maps that are primary references for the distribution and characteristics of carbonate bedrock. These maps may be located using the National Geologic Map Database, https://ngmdb.usgs.gov/ngmdb/ngmdb_home.html and Virginia Energy's Find My Map tool located at https://vadmme.maps.arcgis.com/apps/InformationLookup/index.html?appid=5a26b4feea034a5dbc8353740222f0d8 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. Jr., and Prince, P.S., editors, 2021, Statewide Geologic Map Database of Virginia: Virginia Department of Energy, Geology and Mineral Resources Program, Open-file Report 2021-12, 1:250,000-scale map]. Anne Carter Witt Virginia Department of Energy, Geology and Mineral Resources Program Geologist 434-951-6319 900 Natural Resources Drive, Suite 500 Charlottesville VA 22903 anne.witt@energy.virginia.gov Appalachian Plateau Coastal Plain Piedmont Virginia Valley and Ridge Blue Ridge ISO 19115 Topic Category geoscientificInformation surficial geologic units geologic faulting geologic geologic contacts geologic mapping geological map geologic formations surficial geologic maps geomorphology geologic maps geoscientificInformation surficial geologic units geologic faulting geologic geologic contacts geologic mapping geological map geologic formations surficial geologic maps geomorphology geologic maps Appalachian Plateau Coastal Plain Piedmont Virginia Valley and Ridge Blue Ridge <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>This dataset is not precise beyond 1:250,000-scale and is not for use at scales larger than 1:250,000. Any derivative products utilizing these datasets shall clearly indicate their source. If users modify the data in any way they are obligated to describe the types of modifications they have performed. User specifically agrees not to misrepresent these datasets, nor to imply that changes they made were approved by the Virginia Department of Energy.</SPAN></P></DIV></DIV></DIV> The Virginia Department of Energy (Virginia Energy) provides these geographic data "as is." Virginia Energy makes no guarantee or warranty concerning the accuracy of information contained in the geographic data. Virginia Energy further makes no warranties, either expressed or implied as to any other matter whatsoever, including, without limitation, the condition of the product, or its fitness for any particular purpose. The burden for determining fitness for use lies entirely with the user. Although these data have been processed successfully on computers at Virginia Energy, no warranty, expressed or implied, is made by Virginia Energy regarding the use of these data on any other system, nor does the fact of distribution constitute or imply any such warranty. In no event shall Virginia Energy have any liability whatsoever for payment of any consequential, incidental, indirect, special, or tort damages of any kind, including, but not limited to, any loss of profits arising out of use of or reliance on the geographic data or arising out of delivery, installation, operation, or support by Virginia Energy. Esri ArcGIS 12.6.0.24783 true -83.675395 -75.166435 39.466012 36.540852 0.000000 0.000000 publication date 1993-01-01 2021-11-30 0.000000 0.000000 Feature class MapUnitPolys is part of VAStateGeologicMap.gdb, a composite dataset that conforms to "GeMS (Geologic Map Schema)--a standard format for the digital publication of geologic maps", available at http://ngmdb.usgs.gov/Info/standards/GeMS/. 1 -83.675395 -76.305395 39.453066 36.544789 The accuracy of the geologic data varies depending on the compiled map. In general, contact lines were digitized on screen at 1:24,000-scale. The accuracy of the line work (and generated map unit polygons) is reflected in the LocationConfidenceMeters field in the ContactsAndFaults feature class. Surficial units were interpreted primarily using 10-meter LIDAR or from geologic maps, if available. All line work (bedrock and surficial) was given a corresponding data source citation, identifying the original map source for the line work or the geologist who made the contact line interpretation. Database topology, geometric, and logical errors were identified and fixed iteratively using the "Check Topology" tool and the "Validate Database" tool in the ArcGIS GeMS Database Toolbox (available at https://github.com/usgs/gems-tools-arcmap). The geologic bedrock data and geologic descriptions include information from published geologic maps up to 2021 and is considered to be an update to the geologic map line work originally compiled in 1993. Surficial data was digitized from 10-meter LIDAR flown between 2010 and 2019. Only surficial features that were large enough to identify at 1:24,000-scale were added to MapUnitOverlayPolys. A personal geodatabase of the 1993 map (including contacts and map unit polygons) was imported to a GeMS format geodatabase. Original geologic map descriptions from the 1993 Expanded Explanation were copied from a Word document into the DescriptionOfMapUnits table. Citations were added from the Expanded Explanation into the DataSources table. This data was then loaded onto an ArcSDE server so that multiple editors could update and edit geologic contacts. 2019-01-01 Geologic contact lines were used to build geologic map unit polygons using the ArcGIS Feature to Polygon tool. A temporary annotation feature class was used to label the map unit polygons and symbolize (color) them. 2021-01-01 Map unit descriptions were updated for each geologic unit using the best available geologic data in an Excel spreadsheet. Citations are provided in the DataSources table and fields. Colors were chosen for each map unit. These colors were then used to symbolize the map units built in Step 3. 2021-01-01 Geologic contacts where compiled and updated by geologists from various map sources. Geologists digitized contacts at a nominal scale of 1:24,000. Edge match issues were resolved by the individual geologist. Citations for the source for individual contact lines were added to the DataSources table. Surficial units were also digitized and added to the MapUnitOverlayPolys feature class. 2021-01-01 The GeMS ArcToolbox was used to validate the database, update metadata, and automate field completion. 2021-01-01 511 CarbonateBedrockV2 Polygons that record distribution of map units (including water, snowfields, glaciers, and unmapped area) on the particular map horizon. GeMS Feature Class 511 OBJECTID Internal feature number. Esri Unrepresentable domain. Shape The geometry data type. ESRI Unrepresentable domain. MapUnit CarbLevel String 35 0 0 Shape.STArea() Shape.STArea() Double 0 0 0 Shape.STLength() Shape.STLength() Double 0 0 0 dataset EPSG 6.2(3.0.1) Simple FALSE 511 TRUE FALSE