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Generalized lithology for the conterminous United States

Published by U.S. Geological Survey | Department of the Interior | Catalog Last Checked: May 05, 2026 at 09:02 PM | Dataset Last Updated: August 26, 2020 at 12:00 AM
This data release contains geospatial and tabular data associated with generalized lithologic classes (rocktypes) as reassigned from the USGS state map compilation for the conterminous United States. The dataset consists of one shapefile with associated metadata: geol_poly_albers_anning.shp: polygons of generalized lithologic classes for the conterminous United States And one table with associated metadata: geol_poly_rocktypes.dbf: highly specific state-scale lithologic classes from the USGS state map compilation and generalized lithologic classes (rocktypes)

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