USGS Geoscience Data Catalog
Additional USGS Geoscience data can be found by geographic location or by publication series.
ussurfm020 - Map units, as polygons, geographic projection glacal020 - Glacial limits, as lines without line decorations, geographic projection ussurflam - Map units, as polygons, Lambert_Azimuthal projection glaciallam - Glacial limits, as lines without line decorations, Lambert_Azimuthal projectionA separate package is available for shapefiles, containing
surfpoly.shp - Map units, as polygons, geographic projection surfarc.shp - Attributed contacts and boundaries glacline.shp - glacial limits, as linesAny use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.