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Federal
Geologic Map of the Charlotte 1 degree × 2 degrees Quadrangle, North Carolina and South Carolina
Department of the Interior —
The geodatabase for the Charlotte 1 degree × 2 degrees quadrangle by Goldsmith and others (1988) was compiled in the Geologic Map Schema (GeMS). The geologic map... -
Federal
Database for the geologic map of the Frederick 30 x 60 quadrangle, Maryland, Virginia, and West Virginia
Department of the Interior —
The database for the geologic map of the Frederick 30 x 60 quadrangle covers the distinct geologic provinces and sections of the central Appalachian region that are...