Publications
Publications from the staff of the Geology, Minerals, Energy, and Geophysics Science Center
Filter Total Items: 2354
Dating marine terraces with relative-age and correlated-age methods
No abstract available.
Authors
D.R. Muhs
Metal mining and the environment
The booklet, Metal Mining and the Environment, and the colorful companion poster offer new tools for raising awareness and understanding of the impact and issues surrounding metal mining and the environment. The 64-page full-color booklet contains a copy of the poster which includes a student activity on the back. This booklet and poster can help you: illustrate the importance of our natural and e
Authors
Travis L. Hudson, Frederick D. Fox, Geoffrey S. Plumlee
A comparison of the weights-of-evidence method and probabilistic neural networks
The need to integrate large quantities of digital geoscience information to classify locations as mineral deposits or nondeposits has been met by the weights-of-evidence method in many situations. Widespread selection of this method may be more the result of its ease of use and interpretation rather than comparisons with alternative methods. A comparison of the weights-of-evidence method to probab
Authors
Donald A. Singer, Ryoichi Kouda
Digital analytical data from mineral resource assessments of national forest lands in Washington
Extensive reconnaissance assessments of the mineral resource potential of the Colville and Okanogan National Forests in northeastern Washington were conducted during 1979-1982 by a private consultant A.R. Grant, under contract with the U.S. Department of Agriculture, Forest Service. These forests occupy large parts of Pend Oreille, Stevens, Ferry, and Okanogan counties, and smaller parts of Whatco
Authors
D. E. Boleneus, D. W. Chase
Stratigraphy, tephrochronology, and structural setting of Miocene sedimentary rocks in the Middlegate area, west-central Nevada
No abstract available.
Authors
John H. Stewart, A.M. Sarna-Wojcicki, C.E. Meyer, S. W. Starratt, Elmira Wan
Geochemistry of stream-sediment samples from the Santa Renia Fields and Beaver Peak quadrangles, northern Carlin Trend, Nevada
A broad west-to-east increase of many metal concentrations has been found in stream sediments during a reconnaissance investigation conducted in conjunction with geologic studies in the Santa Renia Fields and Beaver Peak 7–1/2 minute quadrangles near the northern end of the Carlin trend of gold deposits in the Tuscarora Mountains. This regional increase in metal concentrations coincides with a dra
Authors
Ted G. Theodore, Boris B. Kotlyar, Vladimir I. Berger, Barry C. Moring, Donald A. Singer, Sven A. Edstrom
Thickness of Cenozoic Deposits of Yucca Flat Inferred from Gravity Data, Nevada Test Site, Nevada
The basin-basement contact for Yucca Flat was modeled using isostatic gravity data, a linear density-depth function for the basin deposits, and drill-hole constraints to produce a digital database of both the depth to basement and the gravitational anomaly associated with the basement rocks. The model predicts a depth of roughly 2,500 m in the deepest, southern part of the basin. The model shows o
Authors
G. A. Phelps, V. E. Langenheim, R.C. Jachens
Publications of the Western Geologic Mapping Team 1997-1998
The Western Geologic Mapping Team (WGMT) of the U.S. Geological Survey, Geologic Division (USGS, GD), conducts geologic mapping and related topical earth-science studies in the western United States. This work is focused on areas where modern geologic maps and associated earth-science data are needed to address key societal and environmental issues such as ground-water quality, potential geologic
Authors
Paul Stone, C.L. Powell
Gravity and magnetic study of the Pahute Mesa and Oasis Valley region, Nye County, Nevada
Regional gravity and aeromagnetic maps reveal the existence of deep basins underlying much of the southwestern Nevada volcanic field, approximately 150 km northwest of Las Vegas. These maps also indicate the presence of prominent features (geophysical lineaments) within and beneath the basin fill. Detailed gravity surveys were conducted in order to characterize the nature of the basin boundaries,
Authors
Edward A. Mankinen, Thomas G. Hildenbrand, Gary L. Dixon, Edwin H. McKee, Christopher J. Fridrich, Randell J. Laczniak
Geology of the Cordelia and the northern part of the Benicia 7.5 minute quadrangles, California: A digital map database
No abstract available.
Authors
R. W. Graymer, E. E. Brabb, D. L. Jones
An ARC/Info point coverage of Mineral Resource Data System (MRDS) locations in eleven western states
This ARC/Info coverage, derived from the USGS Mineral Resource Data System (MRDS), contains 60,490 records that fall within the states of Arizona, California, Colorado, Idaho, Montana, New Mexico, Nevada, Oregon, Utah, Washington, Wyoming. The dataset has 13 fields containing information on record identification, location, commodity, geology, and deposit type. The data for this report was retrieve
Authors
David G. Frank