Publications
Publications from the staff of the Geology, Minerals, Energy, and Geophysics Science Center
Filter Total Items: 2357
Digital-elevation and surface-classification maps of the Fish Creek area, Harrison Bay quadrangle, northern Alaska
No abstract available.
Authors
John L. Mars, Christopher P. Garrity, David W. Houseknecht, Lee Amoroso, Donald C. Meares
Map showing features and displacements of the Scenic Drive landslide, La Honda, California, during the period March 31-May 7, 2005
No abstract available.
Authors
Ray E. Wells, Michael J. Rymer, Carol S. Prentice, Karen L. Wheeler
Holocene fault scarps and shallow magnetic anomalies along the southern Whidbey Island fault zone near Woodinville, Washington
No abstract available.
Authors
Brian L. Sherrod, Richard J. Blakely, Craig Weaver, Harvey Kelsey, Elizabeth Barnett, Ray Wells
Porphyry copper deposits of the world: database, map, and grade and tonnage models
Mineral deposit models are important in exploration planning and quantitative resource assessments for two reasons: (1) grades and tonnages among deposit types are significantly different, and (2) many types occur in different geologic settings that can be identified from geologic maps. Mineral deposit models are the keystone in combining the diverse geoscience information on geology, mineral occu
Authors
Donald A. Singer, Vladimir Iosifovich Berger, Barry C. Moring
Use of the Biotic Ligand Model to predict metal toxicity to aquatic biota in areas of differing geology
This work evaluates the use of the biotic ligand model (BLM), an aquatic toxicity model, to predict toxic effects of metals on aquatic biota in areas underlain by different rock types. The chemical composition of water, soil, and sediment is largely derived from the composition of the underlying rock. Geologic source materials control key attributes of water chemistry that affect metal toxicity to
Authors
Kathleen S. Smith
Northern Cordillera
No abstract available.
Authors
J.W.H. Monger, Raymond A. Price, Warren J. Nokleberg
Stream-sediment geochemistry in mining-impacted streams: Prichard, Eagle, and Beaver Creeks, northern Coeur d'Alene mining district, northern Idaho
This report presents the results of one aspect of an integrated watershed-characterization study that was undertaken to assess the impacts of historical mining and milling of silver-lead-zinc ores on water and sediment composition and on aquatic biota in streams draining the northern part of the Coeur d'Alene Mining District in northern Idaho. We present the results of chemical analyses of 62 samp
Authors
Stephen E. Box, John C. Wallis, Paul H. Briggs, Zoe Ann Brown
U.S. Geological Survey 2005 oil and gas resource assessment of the central North Slope, Alaska: Play maps and results
No abstract available.
Authors
Christopher P. Garrity, David W. Houseknecht, Kenneth J. Bird, Christopher J. Potter, Thomas E. Moore, Philip H. Nelson, Christopher J. Schenk
Utility of aeromagnetic studies for mapping of potentially active faults in two forearc basins: Puget Sound, Washington, and Cook Inlet, Alaska
High-resolution aeromagnetic surveys over forearc basins can detect faults and folds in weakly magnetized sediments, thus providing geologic constraints on tectonic evolution and improved understanding of seismic hazards in convergent-margin settings. Puget Sound, Washington, and Cook Inlet, Alaska, provide two case histories. In each lowland region, shallow-source magnetic anomalies are related t
Authors
Richard W. Saltus, Richard J. Blakely, Peter J. Haeussler, Ray Wells
Implications of volcanism in coastal California for the Neogene deformation history of western North America
The geologic record of coastal California includes evidence of numerous volcanic centers younger than 30 Ma that do not appear to have erupted in an arc setting. By correlating these volcanic centers with specific slab windows predicted from analysis of magnetic anomalies on the Pacific plate, we add new constraints to tectonic reconstructions since 30 Ma. Our correlations, such as erupting the Mo
Authors
Douglas S. Wilson, Patricia A. McCrory, Richard G. Stanley
Electrical conductivity images of active and fossil fault zones
We compare recent magnetotelluric investigations of four large fault systems: (i) the actively deforming, ocean-continent interplate San Andreas Fault (SAF); (ii) the actively deforming, continent-continent interplate Dead Sea Transform (DST); (iii) the currently inactive, trench-linked intraplate West Fault (WF) in northern Chile; and (iv) the Waterberg Fault/Omaruru Lineament (WF/OL) in Namibia,
Authors
O. Ritter, A. Hoffmann-Rothe, Paul A. Bedrosian, U. Weckmann, V. Haak
Questa baseline and pre-mining ground-water quality invistigation. 13. Mineral microscopy and chemistry of mined and unmined porphyry molybdenum mineralization along the Red River, New Mexico: Implications for ground- and surface-water quality
This report is one in a series presenting results of an interdisciplinary U.S. Geological Survey (USGS) study of ground-water quality in the lower Red River watershed prior to open-pit and underground molybdenite mining at Molycorp's Questa mine. The stretch of the Red River watershed that extends from just upstream of the town of Red River to just above the town of Questa includes several mineral
Authors
Geoff Plumlee, Heather Lowers, Steve Ludington, Alan Koenig, Paul Briggs
By
Water Resources Mission Area, Ecosystems Mission Area, Mineral Resources Program, Toxic Substances Hydrology, Environmental Health Program, Geology, Geophysics, and Geochemistry Science Center, Geology, Minerals, Energy, and Geophysics Science Center, New Mexico Water Science Center, Denver Microbeam Laboratory