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Maps showing mines and prospects in the Southern Massanutten Roadless Area, Page and Rockingham counties, Virginia Maps showing mines and prospects in the Southern Massanutten Roadless Area, Page and Rockingham counties, Virginia
The Southern Massanutten Roadless Area contains about 11,800 acres in the George Washington National Forest in the Valley and Ridge physiographic province of west-central Virginia. The area, which is 13 mi long and 1 to 2 mi wide, is in Page and Rockingham Counties on the eastern side of the Shenandoah Valley, between the North and South Forks of the Shenandoah River. The north end is 11...
Maps showing mines, prospects, and exposures in the Beaver Creek Wilderness, McCreary County, Kentucky Maps showing mines, prospects, and exposures in the Beaver Creek Wilderness, McCreary County, Kentucky
The Beaver Creek Wilderness occupies an area of 4,791 acres within the cliffline bordering the Beaver Creek drainage in McCreary County, southeastern Kentucky. It is in the Daniel Boone National Forest and includes part of the Beaver Creek Cooperative Wildlife Management Area, which is managed by the U.S. Forest Service and the Kentucky Department of Fish and Wildlife Resources. The area...
Maps showing mines, prospects, and mineral localities in and near the Dolly Ann Roadless Area, Alleghany County, Virginia Maps showing mines, prospects, and mineral localities in and near the Dolly Ann Roadless Area, Alleghany County, Virginia
The Dolly Ann Roadless Area comprises 7,900 acres (3,200 ha) in the George Washington National Forest in west-central Virginia. The study area is in central Alleghany County, northeast of Covington, Va. (fig. 1). U.S. Forest Service Route 125 and U.S. Highway 220 furnish vehicular access to the edges of the area, and several foot trails provide access to the interior and peripheral...
Median-permeability contour maps of the J sandstone, Dakota Group, in the Denver Basin, Colorado, Nebraska, and Wyoming Median-permeability contour maps of the J sandstone, Dakota Group, in the Denver Basin, Colorado, Nebraska, and Wyoming
The Lower Cretaceous J sandstone of the Dakota Group (MacKenzie, 1965) is present in the Denver basin in eastern Colorado, southeastern Wyoming, and southwestern Nebraska. This informally named unit deposited during a regression of the Cretaceous epi continental sea and is composed primarily of sandstone and shale of deItaic and near-shore marine origin. The J sandstone can be divided...
Metallogenic map of volcanogenic massive-sulfide occurrences in New Mexico Metallogenic map of volcanogenic massive-sulfide occurrences in New Mexico
New Mexico volcanogenic massive-sulfide occurrences, which typically contain pyrite and pyrrhotite accompanied by variable amounts of base-metal sulfides and precious metals, are found within mainly subaqueous, compositionally bimodal metavolcanic successions of Early to Middle Proterozoic age that are exposed primarily in the north-central part of the state. Host rocks include both...
Mine and prospect map of the Manzano Wilderness, Torrance and Valencia counties, New Mexico Mine and prospect map of the Manzano Wilderness, Torrance and Valencia counties, New Mexico
The U.S. Geological Survey and the U.S. Bureau of Mines conducted field investigations to evaluate the mineral resources of the Manzano Wilderness, Torrance and Valencia Counties, N. Mex., during 1980 and 1982. This map complements the mineral resource appraisal of the Manzano Wilderness (Maxwell and others, 1983). Field studies by the Bureau of Mines included a reconnaissance of mines...
Mineral occurrence map and tabulation of geologic, commodity, and production data, Ajo and Lukeville 1 degree by 2 degrees quadrangles, southwestern Arizona Mineral occurrence map and tabulation of geologic, commodity, and production data, Ajo and Lukeville 1 degree by 2 degrees quadrangles, southwestern Arizona
This map is part of a folio of maps of the Ajo and Lukeville 1 ° x 2° quadrangles, Arizona, prepared under the Conterminous United States Mineral Assessment Program.