Merged aeroradiometric data for Alaska: A web site for distribution of gridded data and plot files
R. W. Saltus, F. E. Riggle, B. T. Clark, P. L. Hill
1999, Open-File Report 99-16
The National Uranium Resource Evaluation (NURE) program was conducted by the U.S. Government between 1974 and 1983. The NURE program was administered by the Grand Junction, CO, office of the Department of Energy. The program included airborne gamma-ray spectrometry and magnetic data collection as well as extensive geochemical sample collection...
HYPOELLIPSE; a computer program for determining local earthquake hypocentral parameters, magnitude, and first-motion pattern
John C. Lahr
1999, Open-File Report 99-23
This report provides Fortran source code and program manuals for HYPOELLIPSE, a computer program for determining hypocenters and magnitudes of near regional earthquakes and the ellipsoids that enclose the 68-percent confidence volumes of the computed hypocenters. HYPOELLIPSE was developed to meet the needs of U.S. Geological Survey (USGS) scientists studying...
Determination of chemical-constituent loads during base-flow and storm-runoff conditions near historical mines in Prospect Gulch, upper Animas River watershed, southwestern Colorado
Laurie Wirt, K.J. Leib, D. J. Bove, M.A. Mast, J. B. Evans, G.P. Meeker
1999, Open-File Report 99-159
Prospect Gulch is a major source of iron, aluminum, zinc, and other metals to Cement Creek. Information is needed to prioritize remediation and develop strategies for cleanup of historical abandoned mine sites in Prospect Gulch. Chemical-constituent loads were determined in Prospect Gulch, a high-elevation alpine stream in southwestern Colorado that is affected by natural...
Alaska resource data file: Afognak quadrangle
S. H. Pilcher
1999, Open-File Report 99-40
No abstract available....
Alaska resource data file: Trinity Islands quadrangle
S. H. Pilcher
1999, Open-File Report 99-41
No abstract available....
Calculation of coal resources using ARC/INFO and Earth Vision; methodology for the National Coal Resource Assessment
L.N. Roberts, L.R. Biewick
1999, Open-File Report 99-5
This report documents a comparison of two methods of resource calculation that are being used in the National Coal Resource Assessment project of the U.S. Geological Survey (USGS). Tewalt (1998) discusses the history of using computer software packages such as GARNET (Graphic Analysis of Resources using Numerical Evaluation Techniques), GRASS...
An interactive computer program to extrapolate the clay fraction distributions of truncated grain-size data
L.J. Poppe, A.H. Eliason
1999, Open-File Report 99-27
Preliminary geologic map of the San Guillermo Mountain Quadrangle, Ventura County, California
S.A. Minor
1999, Open-File Report 99-32
New 1:24,000-scale geologic mapping in the Cuyama 30' x 60' quadrangle, in support of the USGS Southern California Areal Mapping Project (SCAMP), is contributing to a more complete understanding of the stratigraphy, structure, and tectonic evolution of the complex junction area between the NW-striking Coast Ranges and EW-striking western Transverse...
Geologic map of the Hart Peak quadrangle, California and Nevada: A digital database
Jane E. Nielson, Ryan D. Turner, David R. Bedford
1999, Open-File Report 99-34
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...
Alaska resource data file: Kodiak quadrangle
S. H. Pilcher
1999, Open-File Report 99-43
No abstract available....
Structural relationships of pre-Tertiary rocks in the Nevada Test Site region, southern Nevada
J. C. Cole, Patricia Hughes Cashman
1999, Professional Paper 1607
This report contains a synthesis and interpretation of structural and stratigraphic data for pre-Tertiary rocks in a large area of southern Nevada within and near the Nevada Test Site. Its presents descriptive and interpretive information from discontinuously exposed localities in the context of a regional model that integrates stratigraphy, sedimentology,...
Arkansas
Water Resources Division, U.S. Geological Survey
1999, Fact Sheet 005-99
National Coal Quality Inventory (NaCQI) and U.S. Geological Survey Coal Quality Databases
Water Resources Division, U.S. Geological Survey
1999, Fact Sheet 120-99
Coal will remain a very significant part of U.S. energy needs (fig.l), even though there will continue to be concern about environmental impacts associated with its use. Currently, about 88 percent of U.S. coal production is used by electric utilities. The remaining 12 percent is either exported or used domestically...
An Overview of the Factors Involved in Evaluating the Geochemical Effects of Highway Runoff on the Environment
Owen P. Bricker
1999, Open-File Report 98-630
Materials washed by rain and snowmelt from highways into adjacent surface waters, ground waters, and ecosystems can pollute water and affect biota. To understand the chemical behavior of any one of these materials and its effects on the environment requires knowledge of the chemistry of the material and how it...
Simulating contaminant attenuation, double-porosity exchange, and water age in aquifers using MOC3D
Daniel J. Goode
1999, Fact Sheet 086-99
MOC3D is a general-purpose computer model developed by the U.S. Geological Survey (USGS) for simulation of three-dimensional solute transport in ground water (Konikow and others, 1996). The model is an update to the widely used USGS two-dimensional solute-transport model (MOC) and is implemented as an optional “package” for the ground-water...
Geologic map of the East of Grotto Hills quadrangle, California: A digital database
Jane E. Nielson, David R. Bedford
1999, Open-File Report 99-35
The East of Grotto Hills 1:24,000-scale quadrangle of California lies west of the Colorado River about 30 km southwest of Searchlight, Nevada, near the boundary between the northern and southern parts of the Basin and Range Province. The quadrangle includes the eastern margin of Lanfair Valley, the southernmost part of...
USGS international activities in coal resources
Water Resources Division, U.S. Geological Survey
1999, Fact Sheet 119-99
During the last 30 years the U.S. Geological Survey (USGS) has been engaged in coal exploration and characterization in more that 30 foreign countries, including India, Pakistan, China, Turkey, several Eastern European countries, Russia, and other former Soviet Union countries. Through this work, the USGS has developed an internationally recognized...
Geochemistry and stratigraphic relations of middle Proterozoic rocks of the New Jersey Highlands
Richard A. Volkert, Avery Drake Jr.
1999, Professional Paper 1565-C
Middle Proterozoic rocks of the New Jersey Highlands consist of a basement of dacitic, tonalitic, trondhjemitic, and charnockitic rocks that constitute the Losee metamorphic suite. These rocks are unconformably overlain by a layered supracrustal sequence of quartzo-feldspathic and calcareous rocks. Abundant sheets of hornblende- and biotite-bearing rocks of the Byram...
Identification of potential water-resources-monitoring sites in the Croton Reservoir System, southeastern New York
K.S. Linsey, S.W. Wolcott, N.B. Schoonmaker
1999, Open-File Report 97-638
Regional geologic map of San Andreas and related faults in Carrizo Plain, Temblor, Caliente and La Panza Ranges and vicinity, California: A digital database
T. W. Dibblee, S. E. Graham, T. M. Mahony, J. L. Blissenbach, J. J. Mariant, C. M. Wentworth
1999, Open-File Report 99-14
This Open-File Report is a digital geologic map database. The report serves to introduce and describe the digital data. There is no paper map included in the Open-File Report. The report includes PostScript and PDF plot files that can be used to plot images of the geologic map sheet and...
Aeromagnetic survey in Wisconsin 1997-98; digital data files
D. L. Daniels, S. W. Nicholson, W.F. Cannon
1999, Open-File Report 99-28
No abstract available....
Processing of single channel air and water gun data for imaging an impact structure at the Chesapeake Bay
Myung W. Lee
1999, Bulletin 2169
Processing of 20 seismic profiles acquired in the Chesapeake Bay area aided in analysis of the details of an impact structure and allowed more accurate mapping of the depression caused by a bolide impact. Particular emphasis was placed on enhancement of seismic reflections from the basement. Application of wavelet deconvolution...
Soil calcium status and the response of stream chemistry to changing acidic deposition rates
G.B. Lawrence, Mark B. David, Gary M. Lovett, Peter S. Murdoch, Douglas A. Burns, John L. Stoddard, Barry P. Baldigo, J.H. Porter, A.W. Thompson
1999, Ecological Applications (9) 1059-1072
Despite a decreasing trend in acidic deposition rates over the past two to three decades, acidified surface waters in the northeastern United States have shown minimal changes. Depletion of soil Ca pools has been suggested as a cause, although changes in soil Ca pools have not been directly related to...
Distribution of benthic foraminifers (>125 um) in the surface sediments of the Arctic Ocean
Lisa E. Osterman, Richard Z. Poore, Kevin M. Foley
1999, Bulletin 2164
Census data on benthic foraminifers (>125 ?m) in surface sediment samples from 49 box cores are used to define four depth-controlled biofacies, which will aid in the paleoceanographic reconstruction of the Arctic Ocean. The shelf biofacies contains a mix of shallow-water calcareous and agglutinated species from the continental shelves of the Beaufort and Chukchi Seas and...
Total materials consumption; an estimation methodology and example using lead; a materials flow analysis
Marilyn B. Biviano, Lorie A. Wagner, Daniel E. Sullivan
1999, Circular 1183
Materials consumption estimates, such as apparent consumption of raw materials, can be important indicators of sustainability. Apparent consumption of raw materials does not account for material contained in manufactured products that are imported or exported and may thus under- or over-estimate total consumption of materials in the domestic economy. This...
