Natural aggregates of the conterminous United States

Online link https://doi.org/10.3133/b1594
Description Geologic occurrence of potential sources of crushed stone and sand and gravel for use as natural aggregate. A summary of the natural aggregate industry is also included. Data are provided in Shapefile format.
Originators Langer, William H.
Publication U.S. Geological Survey Bulletin 1594
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Format Content Download package
Shapefile Plate 1, potential source areas of sand and gravel aggregate. https://pubs.usgs.gov/bul/b1594/Plate1_shapefiles.zip
Shapefile Plate 2, potential source areas of crushed stone aggregate and predominant bedrock types in these areas. https://pubs.usgs.gov/bul/b1594/Plate2_shapefile.zip