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Federal
TIGER/Line Shapefile, Current, County, Carroll County, AR, Topological Faces (Polygons With All Geocodes)
U.S. Census Bureau, Department of Commerce —
The TIGER/Line shapefiles and related database files (.dbf) are an extract of selected geographic and cartographic information from the U.S. Census Bureau's Master... -
Federal
The database for the isopach map of the Brightseat Formation and structure contour map of the Cretaceous-Paleogene boundary, in Maryland and Virginia
Department of the Interior —
The goal of the Atlantic Subsurface Stratigraphic Initiative (ASSI) is to create isopach and structural contour maps for all Coastal Plain formations within the...