Publications
Publications from the staff of the Geology, Minerals, Energy, and Geophysics Science Center
Filter Total Items: 2486
Corrections to "Estimating earthquake location and magnitude from seismic intensity data" Corrections to "Estimating earthquake location and magnitude from seismic intensity data"
The confidence parameters in Table 5 and Figures 7 -12 in Bakun and Wentworth (1997) were calculated using the site corrections for MI(4) rather than Bakun and Wentworth's (1997) preferred relation MI(3). The conclusions of Bakun and Wentworth (1997) are not changed by these corrections. The corrected Table 5 and Figures are in this report and at http://quake.wr.usgs.gov/~bakun/.
Authors
W. H. Bakun, C. M. Wentworth
Rotational and accretionary evolution of the Klamath Mountains, California and Oregon, from Devonian to present time Rotational and accretionary evolution of the Klamath Mountains, California and Oregon, from Devonian to present time
The purpose of this report is to show graphically how the Klamath Mountains grew from a relatively small nucleus in Early Devonian time to its present size while rotating clockwise approximately 110°. This growth occurred by the addition of large tectonic slices of oceanic lithosphere, volcanic arcs, and melange during a sequence of accretionary episodes. The Klamath Mountains province...
Authors
William P. Irwin, Edward A. Mankinen
Stratiform zinc-lead mineralization in Nasina assemblage rocks of the Yukon-Tanana Upland in east-central Alaska Stratiform zinc-lead mineralization in Nasina assemblage rocks of the Yukon-Tanana Upland in east-central Alaska
The Yukon-Tanana Upland of east-central Alaska and Yukon comprises thrust sheets of ductilely deformed metasedimentary and metaigneous rocks of uncertain age and origin that are overlain by klippen of weakly metamorphosed oceanic rocks of the Seventymile-Slide Mountain terrane, and intruded by post-kinematic Early Jurassic, Cretaceous and Tertiary granitoids. Metamorphosed continental...
Authors
Cynthia Dusel-Bacon, Jason R. Bressler, Hidetoshi Takaoka, James K. Mortensen, Douglas H. Oliver, Joel S. Leventhal, Rainer J. Newberry, Thomas K. Bundtzen
Evaluation of faults and their effect on ground-water flow southwest of Frenchman Flat, Nye and Clark counties, Nevada: a digital database Evaluation of faults and their effect on ground-water flow southwest of Frenchman Flat, Nye and Clark counties, Nevada: a digital database
Ground-water flow through the region south and west of Frenchman Flat, in the Ash Meadows subbasin of the Death Valley ground-water flow system, is controlled mostly by faults which arrange the distribution of permeable and impermeable rocks. In addition, most permeability is along fractures caused by faulting in carbonate rocks. Large faults are more likely to reach the potentiometric...
Authors
Edwin H. McKee, Thomas A. Wickham, Karen L. Wheeler
Mineral resource appraisal of the Salmon National Forest, Idaho Mineral resource appraisal of the Salmon National Forest, Idaho
The Salmon National Forest administers 1,776,994 net acres of mountainous terrain located in east-central Idaho. Most of the Forest is in Lemhi County; only a small portion falls within Idaho and Valley Counties. Approximately 426,114 acres of the Frank Church-River of No Return Wilderness extends into the western part of the Forest and mineral entry is severely restricted. Because of...
Authors
Rick Johnson, Terry Close, Ed McHugh
Structural and kinematic evolution of the Yukon-Tanana upland tectonites, east-central Alaska: A record of late Paleozoic to Mesozoic crustal assembly Structural and kinematic evolution of the Yukon-Tanana upland tectonites, east-central Alaska: A record of late Paleozoic to Mesozoic crustal assembly
The Yukon-Tanana terrane, the largest tectonostratigraphic terrane in the northern North American Cordillera, is polygenetic and not a single terrane. Lineated and foliated (L-S) tectonites, which characterize the Yukon-Tanana terrane, record multiple deformations and formed at different times. We document the polyphase history recorded by L-S tectonites within the Yukon-Tanana upland...
Authors
V. L. Hansen, Cynthia Dusel-Bacon
U.S. Geological Survey studies of water co-produced with oil and gas: Implications for future petroleum resource development U.S. Geological Survey studies of water co-produced with oil and gas: Implications for future petroleum resource development
The U.S. Geological Survey is conducting research on the impacts of produced waters on petroleum resource development and the environment. Ongoing multidisciplinary investigations are focused on the 1) quantity and quality of current water production, 2) geologic and geochemical parameters that influence the viability of injection wells, and 3) processes that affect the dispersion of...
Authors
George N. Breit, Yousif K. Kharaka, Robert A. Zielinski, C. A. Rice, Bruce D. Smith, Jennie L. Ridgley
Rasgos geologicos y movimientos de ladera en el sector Izbor-Velez Benaudalla de la cuenca del Rio Guadalfeo (Granada) Rasgos geologicos y movimientos de ladera en el sector Izbor-Velez Benaudalla de la cuenca del Rio Guadalfeo (Granada)
No abstract available.
Authors
T.F. Castillo, E. E. Brabb, F.D. Salazar, Augustin Martin-Algarra, C.F. Irigary, A.R. Estevez, J. Chacon
Vertical axis rotations in the Mojave: Evidence from the Independence dike swarm: Comment and Reply Vertical axis rotations in the Mojave: Evidence from the Independence dike swarm: Comment and Reply
No abstract available.
Authors
Keith A. Howard, R.F. Hopson, Hagai Ron, Amos Nur
Preliminary geologic map of the Mint Canyon 7.5' quadrangle, southern California: A digital database Preliminary geologic map of the Mint Canyon 7.5' quadrangle, southern California: A digital database
This Open-File report is a digital geologic map database. This pamphlet serves to introduce and describe the digital data. There is no paper map included in the Open-File report. This digital map database is compiled from previously published sources combined with some new mapping and modifications in nomenclature. The geologic map database delineates map units that are identified by...
Authors
R.F. Yerkes
Preliminary geologic map of the Burbank 7.5' quadrangle, southern California: A digital database Preliminary geologic map of the Burbank 7.5' quadrangle, southern California: A digital database
This Open-File report is a digital geologic map database. This pamphlet serves to introduce and describe the digital data. There is no paper map included in the Open-File report. This digital map database is compiled from previously published sources combined with some new mapping and modifications in nomenclature. The geologic map database delineates map units that are identified by...
Authors
R.F. Yerkes
The Loma Prieta, California, earthquake of October 17, 1989: Aftershocks and postseismic effects The Loma Prieta, California, earthquake of October 17, 1989: Aftershocks and postseismic effects
While the damaging effects of the earthquake represent a significant social setback and economic loss, the geophysical effects have produced a wealth of data that have provided important insights into the structure and mechanics of the San Andreas Fault system. Generally, the period after a large earthquake is vitally important to monitor. During this part of the seismic cycle, the...
Authors
Paul A. Reasenberg, Lynn D. Dietz, William L. Ellsworth, Robert W. Simpson, John W. Gephart, Susan Y. Schwartz, Glenn D. Nelson, H. Guo, A. Lerner-Lam, William Menke, Susan E. Hough, Leif Wennerberg, K.S. Breckenridge, Jeff Behr, Roger G. Bilham, Paul Bodin, Arthur G. Sylvester, Jon S. Galehouse, R. Burgmann, Paul Segall, Michael Lisowski, Jerry L. Svarc, John Langbein, Mark F. Linker, J.R. Rice, M. T. Gladwin, R. L. Gwyther, R.H.G. Hart, Randall Mackie, Theodore R. Madden, Edward A. Nichols