Publications
Publications from the staff of the Geology, Minerals, Energy, and Geophysics Science Center
Filter Total Items: 2510
Geologic map of the Hart Peak quadrangle, California and Nevada: A digital database 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...
Authors
Jane E. Nielson, Ryan D. Turner, David R. Bedford
Late Cenozoic stratigraphy and tephrochronology of the western Black Mountains piedmont, Death Valley, California: Implications for the tectonic development of Death Valley Late Cenozoic stratigraphy and tephrochronology of the western Black Mountains piedmont, Death Valley, California: Implications for the tectonic development of Death Valley
Geologic mapping combined with the tephrochronology of spatially isolated sedimentary sections along the western Black Mountains piedmont adjacent the Death Valley fault zone (DVFZ) improves the late Cenozoic stratigraphy from relative age to correlated age. Pliocene tephra layers identified in Funeral Formation conglomerates at Artist Drive and Copper Canyon include a “Nomlaki-like”...
Authors
Jeffrey R. Knott, Andrei M. Sarna-Wojcicki, C.E. Meyer, John Tinsley, S. G. Wells, Elmira Wan
An earth-system science toolkit for environmentally-friendly mineral-resource development An earth-system science toolkit for environmentally-friendly mineral-resource development
No abstract available.
Authors
Geoffrey S. Plumlee, M.J. Logsdon
The environmental geology of mineral deposits The environmental geology of mineral deposits
No abstract available.
Authors
Geoffrey S. Plumlee
Geologic controls on the composition of natural waters and mine waters draining diverse mineral-deposit types Geologic controls on the composition of natural waters and mine waters draining diverse mineral-deposit types
No abstract available.
Authors
Geoffrey S. Plumlee, K. S. Smith, M. R. Montour, W. H. Ficklin, E. L. Mosier
Examining risk in mineral exploration Examining risk in mineral exploration
Successful mineral exploration strategy requires identification of some of the risk sources and considering them in the decision-making process so that controllable risk can be reduced. Risk is defined as chance of failure or loss. Exploration is an economic activity involving risk and uncertainty, so risk also must be defined in an economic context. Risk reduction can be addressed in...
Authors
Donald A. Singer, Ryoichi Kouda
An interpretation of the 1997 airborne electromagnetic (AEM) survey, Fort Huachuca vicinity, Cochise County, Arizona An interpretation of the 1997 airborne electromagnetic (AEM) survey, Fort Huachuca vicinity, Cochise County, Arizona
In March of 1997, an airborne electromagnetic (AEM) survey of the Fort Huachuca Military Reservation and immediate surrounds was conducted. This survey was sponsored by the U.S. Army and contracted through the Geologic Division of the U.S. Geological Survey (USGS). Data were gathered by Geoterrex-Dighem Ltd. of Ottawa, Canada. The survey aircraft is surrounded by a coil through which a...
Authors
Mark W. Bultman, Mark E. Gettings, Jeff Wynn
Paleozoic and Mesozoic rocks of Stikinia exposed in northwestern British Columbia: Implications for correlations in the northern Cordillera: Discussion and reply Paleozoic and Mesozoic rocks of Stikinia exposed in northwestern British Columbia: Implications for correlations in the northern Cordillera: Discussion and reply
No abstract available.
Authors
S.T. Johnston, M.G. Mihalynuk, David A. Brew, Craig J. R. Hart, Philippe Erdmer, G.E. Gehrels, Lisel Currie, R.R. Parrish
Structural and kinematic evolution of the Yukon-Tanana upland tectonites, east-central Alaska: A record of late Paleozoic to Mesozoic crustal assembly: Discussion and Reply Structural and kinematic evolution of the Yukon-Tanana upland tectonites, east-central Alaska: A record of late Paleozoic to Mesozoic crustal assembly: Discussion and Reply
No abstract available.
Authors
M.G. Mihalynuk, JoAnne L. Nelson, Donald Murphy, David A. Brew, Philippe Erdmer, V. L. Hansen, D.H. Oliver
Preliminary digital map of cryptocrystalline occurrences in northern Nevada Preliminary digital map of cryptocrystalline occurrences in northern Nevada
The purpose was to identify potential cryptocrystalline material sources for tools used by indigenous people of the northern Nevada portion of the Great Basin. Cryptocrystalline occurrence data combed from the U.S. Geological Survey's Mineral Resources Data System (MRDS, 1995) were combined with sites described in Nevada rockhound guides and entered into a geographic information system...
Authors
Lorre A. Moyer
Digital elevation model (DEM) of Cascadia, latitude 39N-53N, longitude 116W-133W Digital elevation model (DEM) of Cascadia, latitude 39N-53N, longitude 116W-133W
This report contains a 250-meter digital elevation model (DEM) for Cascadia (latitude 39N - 53N, longitude 116W - 133W), a region that encompasses the Cascade volcanic arc, the Cascadia subduction zone, and the Juan de Fuca Ridge system. The DEM is distributed as file cascdem.tar.gz (39 MB; 78MB uncompressed).
Authors
Ralph A. Haugerud
Trace-element geochemistry of metabasaltic rocks from the Yukon-Tanana Upland and implications for the origin of tectonic assemblages in east-central Alaska Trace-element geochemistry of metabasaltic rocks from the Yukon-Tanana Upland and implications for the origin of tectonic assemblages in east-central Alaska
We present major- and trace- element geochemical data for 27 amphibolites and six greenstones from three structural packages in the Yukon-Tanana Upland of east-central Alaska: the Lake George assemblage (LG) of Devono-Mississippian augen gneiss, quartz-mica schist, quartzite, and amphibolite; the Taylor Mountain assemblage (TM) of mafic schist and gneiss, marble, quartzite, and metachert...
Authors
Cynthia Dusel-Bacon, K.M. Cooper