Publications
Publications from the staff of the Geology, Minerals, Energy, and Geophysics Science Center
Filter Total Items: 2386
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
Long Valley Coring Project, Inyo County, California, 1998, preliminary stratigraphy and images of recovered core
Phase III of the Long Valley Exploratory Well, the Long Valley Coring Project, obtained continuous core between the depths of 7,180 and 9,831 ft (2,188 to 2,996 meters) during the summer of 1998. This report contains a compendium of information designed to facilitate post-drilling research focussed on the study of the core. Included are a preliminary stratigraphic column compiled primarily from fi
Authors
Penelope C. Sackett, Vicki S. McConnell, Angela L. Roach, Susan S. Priest, John H. Sass
Digital geologic map of the Sandpoint 1- by 2-degree quadrangle, Washington, Idaho, and Montana
The geology of the Sandpoint 1:250,000 quadrangle, Washington, Idaho, and Montana was mapped by F.K. Miller, R.F. Burmester, D.M. Miller, and R.E. Powell between 1963 and 1995 onto a scale-stable 1:250,000 topographic map base and subsequently input into an Arc/Info geographic information system (GIS) by P.D. Derkey. The digital geologic map database can be queried in many ways to produce a variet
Authors
F. K. Miller, R. F. Burmester, R. E. Powell, D. M. Miller, P. D. Derkey
Geologic map of the Scotts Mills, Silverton, and Stayton Northeast 7.5 minute quadrangles, Northwest Oregon: A digital database
The Scotts Mills, Silverton, and Stayton NE 7.5 minute quadrangles are situated along the eastern margin of the Willamette Valley and adjacent lower foothills (Waldo and Silverton Hills) of the Cascade Range (Fig. 1). The terrain within this area is of low to moderate relief, ranging from 100 to more than 1000 ft above sea level. This area is largely rural, with most of the valley floor and low-re
Authors
Terry Tolan, Marvin Beeson, Karen L. Wheeler
An evaluation of sand and gravel resources in and near the Prescott National Forest in the Verde Valley, Arizona, with a section on evaluation of sand and gravel resources using selected engineering variables
This study was based on available published literature. Although no field investigation was conducted in the Prescott National Forest to the west of the Verde River, a field investigation was conducted in the summer of 1994 by this author on the Coconino National Forest, to the east of the Verde River, where units of surficial materials of the same age and similar character are found (Cox, 1995).
Authors
Leslie J. Cox, James D. Bliss, Robert J. Miller
Physiographic rim of the Grand Canyon, Arizona: A digital database
This Open-File report is a digital physiographic map database. This pamphlet serves to introduce and describe the digital data. There is no paper map included in the Open-File report. The report does include, however, PostScript and PDF format plot files, each containing an image of the map. For those interested in a paper plot of information contained in the database or in obtaining the PostScrip
Authors
George H. Billingsley, Haydee M. Hampton
Geologic map of the Hart Peak quadrangle, California and Nevada: A digital database
The Hart Peak 1:24,000-scale quadrangle is located about 12 km southwest of Searchlight, Nevada, comprehending the eastern part of the Castle Peaks, California, and most of the Castle Mountains and the northwestern part of the Piute Range, in California and Nevada. The Castle Peaks area constitutes the northeasternmost part of the northeast-trending New York Mountains. The Castle Mountains straddl
Authors
Jane E. Nielson, Ryan D. Turner, David R. Bedford