Publications
Publications from the staff of the Geology, Minerals, Energy, and Geophysics Science Center
Filter Total Items: 2543
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
Neogene contraction between the San Andreas fault and the Santa Clara Valley, San Francisco Bay region, California Neogene contraction between the San Andreas fault and the Santa Clara Valley, San Francisco Bay region, California
In the southern San Francisco Bay region of California, oblique dextral reverse faults that verge northeastward from the San Andreas fault experienced triggered slip during the 1989 M7.1 Loma Prieta earthquake. The role of these range-front thrusts in the evolution of the San Andreas fault system and the future seismic hazard that they may pose to the urban Santa Clara Valley are poorly...
Authors
Robert J. McLaughlin, V.E. Langenheim, K. M. Schmidt, R.C. Jachens, R. G. Stanley, A. S. Jayko, K. A. McDougall, J. C. Tinsley, Z. C. Valin
Foreshocks and aftershocks of the great 1857 California earthquake Foreshocks and aftershocks of the great 1857 California earthquake
The San Andreas fault is the longest fault in California and one of the longest strike-slip faults anywhere in the world, yet we know little about many aspects of its behavior before, during, and after large earthquakes. We conducted a study to locate and to estimate magnitudes for the largest foreshocks and aftershocks of the 1857 M 7.9 Fort Tejon earthquake on the central and southern...
Authors
A.J. Meltzner, D.J. Wald
How useful is landslide hazard information? Lessons learned in the San Francisco Bay region How useful is landslide hazard information? Lessons learned in the San Francisco Bay region
Landslides, worldwide and in the United States, are arguably the most costly natural hazard. Substantial landslide information is available, but much of it remains underutilized, as a disconnect exists among geologists, decision makers, and the public. The lack of a national landslide insurance policy exacerbates this situation and promotes litigation as the principal recourse for...
Authors
D. G. Howell, D.W. Ramsey, E. E. Brabb
Sand dunes of the northern Great Plains of Canada and the United States Sand dunes of the northern Great Plains of Canada and the United States
No abstract available.
Authors
D.R. Muhs, S.A. Wolfe
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
Field trip guide to selected studies of the Southwest Mineral and Environmental Investigations Project in southeastern Arizona Field trip guide to selected studies of the Southwest Mineral and Environmental Investigations Project in southeastern Arizona
The Southwest Mineral and Environmental Investigations Project is designed to address issues raised by rapid urban development in the basins of the southwestern U.S. These issues require objective geoscientific data that can be used by land managers and stakeholders to develop informed land and water use strategies. The project integrates new and existing geologic, geophysical, and...
Authors
B. B. Houser, M. E. Gettings, M.W. Bultman, Floyd Gray, K.R. Caruthers, D.M. Hirschberg