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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. 

Filter Total Items: 9023

Map showing depth to bedrock in the Seattle 30' by 60' Quadrangle, Washington Map showing depth to bedrock in the Seattle 30' by 60' Quadrangle, Washington

Maps depicting thicknesses of sedimentary units (isopach maps) are standard tools for interpretation of processes and patterns of sedimentation within basins (Potter and Pettijohn, 1977, p. 283-287). Isopach maps showing the thickness of unconsolidated sedimentary deposits overlying bedrock may help locate sources of aggregate and potential ground-water aquifers. These maps also aid in...

Map showing distribution of altered rocks, faults, and linear features in the Walker Lake 1° x 2° quadrangle, Nevada and California Map showing distribution of altered rocks, faults, and linear features in the Walker Lake 1° x 2° quadrangle, Nevada and California

No abstract available.

Map showing distribution of mineral resources (excepting oil and gas) in the Philip Smith Mountains Quadrangle, Alaska Map showing distribution of mineral resources (excepting oil and gas) in the Philip Smith Mountains Quadrangle, Alaska

No abstract available.

Map showing geochemical characteristics of the North Fork Smith River Roadless Areas, Del Norte County, California, Curry and Josephine Counties, Oregon Map showing geochemical characteristics of the North Fork Smith River Roadless Areas, Del Norte County, California, Curry and Josephine Counties, Oregon

The North Fork Smith River Roadless Areas are located primarily in Del Norte County, northern California, include small parts of Curry and Josephine Counties, Oreg., and cover parts of the Gasquet, Crescent City, and Chetco Peak 15-minute quadrangles. The areas encompass aproximately 39,400 acres of Six rivers National Forest and 950 acres of Siskiyou National Forest and extend from just...

Map showing geochemical summary for the Bald Rock and Middle Fork Feather River Roadless Areas, Butte and Plumas counties, California Map showing geochemical summary for the Bald Rock and Middle Fork Feather River Roadless Areas, Butte and Plumas counties, California

The Bald Rock Roadless Area consists of 3,850 acres in Butte County, Calif. The Middle Rock Feather River Roadless Area consists of 29,300 acres ub Butte and Plumas Counties, Calif. Both roadless areas are in the Plumas National Forest and are on the west slope of the northern Sierra Nevada southwest of Quincy, Calif. (fig. 1). The two roadless areas are alined along the Middle Fork of...

Map showing geochemical summary for the Chips Creek and Bucks Lake Roadless Areas, Butte and Plumas Counties, California Map showing geochemical summary for the Chips Creek and Bucks Lake Roadless Areas, Butte and Plumas Counties, California

No abstract available.

Map showing gravel-bearing surficial deposits and basaltic rocks near Trinidad, Las Animas County, Colorado Map showing gravel-bearing surficial deposits and basaltic rocks near Trinidad, Las Animas County, Colorado

This map of the Trinidad area is considered to be a special purpose map, as it shows only gravel-bearing alluvial deposits laid down by streams and a series of stacked lava flows erupted from local volcanoes. Nongravelly surficial deposits and Cretaceous bedrock, which would be on a standard geologic map, are not shown. The map has two purposes: a scientific one to show the distribution

Map showing ground failures from the Greenville/Mount Diablo earthquake sequence of January 1980, Northern California Map showing ground failures from the Greenville/Mount Diablo earthquake sequence of January 1980, Northern California

The Greenville/Mt. Diablo earthquake sequence of January 24-26, 1980, was composed of Small and moderate earthquakes; the two largest shocks, on January 24 and 26, were of magnitudes (M) 5.5 and 5.6, respectively (Bolt and others, 1981). A 5.5 event is at the lower end of the range of earthquake magnitudes which cause observable ground failure (Youd and Perkins, 1978; Keefer, 1984)...

Map showing hydrothermal alteration and fluorite occurrences in the Vasquez Peak Wilderness Study Area and the Williams Fork and St. Louis Peak Roadless Areas, Clear Creek, Grand, and Summit counties, Colorado Map showing hydrothermal alteration and fluorite occurrences in the Vasquez Peak Wilderness Study Area and the Williams Fork and St. Louis Peak Roadless Areas, Clear Creek, Grand, and Summit counties, Colorado

No abstract available.

Map showing interpretation of Landsat imagery of the Lake Clark Quadrangle, Alaska Map showing interpretation of Landsat imagery of the Lake Clark Quadrangle, Alaska

No abstract available.

Map showing mines, prospects, and mineral sites in the Ellicott Rock Wilderness and additions, South Carolina, North Carolina, and Georgia Map showing mines, prospects, and mineral sites in the Ellicott Rock Wilderness and additions, South Carolina, North Carolina, and Georgia

The Ellicott Rock Wilderness and additions were investigated for mineral resources by the U.S. Bureau of Mines (USBM) in the fall of 1978 and the fall of 1979; the U.S. Geological Survey (USGS) mapped the geology in 1978 and 1979 (Bell and Luce, 1983) and assessed the mineral resource potential of the study area (Luce and others, 1983).

Map showing relative slope stability in the Port Townsend 30' x 60' quadrangle, Puget Sound region, Washington Map showing relative slope stability in the Port Townsend 30' x 60' quadrangle, Puget Sound region, Washington

No abstract available.
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