Maps
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USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.
USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.
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
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Volcanic Maps
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All Maps
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Map showing geochemical characteristics of rock samples from the Kalmiopsis Wilderness, southwestern Oregon Map showing geochemical characteristics of rock samples from the Kalmiopsis Wilderness, southwestern Oregon
This report summarizes 1,307 semiquantitative chemical analyses of rocks collected to aid int he evaluation of the mineral resources of the Kalmiopsis Wilderness, Oreg. Chemical analyses and sample location maps are presented by Grimes, Leinz, and Speckman (1981). The area is located in the Kilamath Mountains geoporphic province of southwestern Oregon, and the area's location and...
Map showing late Cenozoic faults in the Walker Lake 1 degree by 2 degrees Quadrangle, Nevada-California Map showing late Cenozoic faults in the Walker Lake 1 degree by 2 degrees Quadrangle, Nevada-California
Patterns of Late Cenozoic Faulting The Walker Lake 1o x 2o quadrangle lies athwart the transitional boundary between the Sierra Nevade and Basin and Range physiographic provinces. Six distinct topographic domains are identified with the quadrangle (fig. 1). Theses domains are clearly defined by contrasting orientations, densities, and styles of lake Neogene faulting as follows:
Map showing quarries, mines, prospects, and sample data in and near the James River Face Wilderness, Bedford and Rockbridge counties, Virginia Map showing quarries, mines, prospects, and sample data in and near the James River Face Wilderness, Bedford and Rockbridge counties, Virginia
The james River Face Wilderness comprises 8,800 acres in the Jefferson National Forest and occupies parts of Bedford and Rockbridge Counties, west-central Virginia. It is about 2 mi southeast of Natural Bridge Station and 0.5 mi south of Glasgow (fig. 1). Access is provided by U.S. Route 501, State Route 130, and the Blue Ridge Parkway. Interior access is provided by the Appalachian...