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Maps

Our programs produce accurate geologic maps and 3-D geologic frameworks that provide critical data for sustaining and improving the quality of life and economic vitality of the Nation. They also organize, maintain, and publish the geospatial baseline of the Nation's topography, natural landscape, built environment and more.

Geologic Maps

Geologic Maps

Map Releases

Map Releases

Topo Maps

Topo Maps

Volcanic Maps

Volcanic Maps

All Maps

Filter Total Items: 9493

Geologic map and engineering data for the Highlands Ranch Quadrangle, Arapahoe and Douglas counties, Colorado

The map and accompanying tables are designed to be of use to scientists and nonscientists alike. Physical characteristics of the bedrock units and surficial units are described in table 1 (sheet 2) and table 2 (sheet 3), respectively. Those deposits that are known to be less than 5 feet (<2 m) thick are not mapped or described. Residuum and weathered and unweathered bedrock are not differentiated

Geologic map and sections of the Holy Cross quadrangle, Eagle, Lake, Pitkin, and Summit Counties, Colorado

This map was first published as a printed edition in 1974. The geologic data have now been captured digitally and are presented here along with images of the printed map sheets. The map encompasses the area of four 7.5-minute quadrangles between 39º15' and 39º 30'N and 106º15' and 106º30'W in the Sawatch and Gore mountain ranges, and upper part of the Arkansas River drainage in central Colorado. T