Publications
Publications from the staff of the Geology, Minerals, Energy, and Geophysics Science Center
Filter Total Items: 2537
Minerales en nuestro ambiente Minerales en nuestro ambiente
No abstract available.
Authors
Dave G. Frank, John P. Galloway, Susan Garcia, Judy Weathers
Audiomagnetotelluric Data and Two-Dimensional Models from Spring, Snake, and Three Lakes Valleys, Nevada Audiomagnetotelluric Data and Two-Dimensional Models from Spring, Snake, and Three Lakes Valleys, Nevada
Audiomagnetotelluric (AMT) data along thirteen profiles in Spring, Snake, and Three Lakes Valleys, and the corresponding two-dimensional (2-D) inverse models, are presented. The AMT method is a valuable tool for estimating the electrical resistivity of the Earth over depth ranges of a few meters to roughly one kilometer. It is important for revealing subsurface structure and stratigraphy...
Authors
Darcy McPhee, Bruce A. Chuchel, Louise Pellerin
Geophysical Data from Spring Valley to Delamar Valley, East-Central Nevada Geophysical Data from Spring Valley to Delamar Valley, East-Central Nevada
Cenozoic basins in eastern Nevada and western Utah constitute major ground-water recharge areas in the eastern part of the Great Basin and these were investigated to characterize the geologic framework of the region. Prior to these investigations, regional gravity coverage was variable over the region, adequate in some areas and very sparse in others. Cooperative studies described herein...
Authors
Edward A. Mankinen, Carter W. Roberts, Edwin H. McKee, Bruce A. Chuchel, Robert L. Morin
Joint IODP-ICDP Workshop examines challenges of fault zone drilling Joint IODP-ICDP Workshop examines challenges of fault zone drilling
No abstract available.
Authors
H. Tobin, H. Ito, Stephen H. Hickman, Gaku Kimura
Assessment of Undiscovered Natural Gas Resources of the Sacramento Basin Province of California, 2006 Assessment of Undiscovered Natural Gas Resources of the Sacramento Basin Province of California, 2006
The U.S. Geological Survey (USGS) recently completed a new assessment of undiscovered natural gas resources of the Sacramento Basin Province of California. Using a geology-based assessment methodology, the USGS mean estimates of undiscovered, technically recoverable resources are 534 billion cubic feet of natural gas and 323 thousand barrels of natural gas liquids in the Sacramento Basin...
Authors
Allegra Hosford Scheirer, Marilyn E. Tennyson, Leslie B. Magoon, Ronald R. Charpentier, Troy A. Cook, Timothy R. Klett, Richard M. Pollastro, Christopher J. Schenk
Principal Facts of Gravity data in the Northern Willamette Valley and Vicinity, Northwestern Oregon and Southwestern Washington Principal Facts of Gravity data in the Northern Willamette Valley and Vicinity, Northwestern Oregon and Southwestern Washington
Gravity data were collected from 2004 through 2006 to assist in mapping subsurface geology in the northern Willamette Valley and vicinity, northwestern Oregon and southwestern Washington. Prior to this effort to improve the gravity data coverage in the study area, very little regional data were available. This report gives the principle facts for 2710 new gravity stations and 1446...
Authors
Robert L. Morin, Karen L. Wheeler, Darcy McPhee, Philip A. Dinterman, Janet T. Watt
Relatively simple through-going fault planes at large-earthquake depth may be concealed by the surface complexity of strike-slip faults Relatively simple through-going fault planes at large-earthquake depth may be concealed by the surface complexity of strike-slip faults
At the surface, strike-slip fault stepovers, including abrupt fault bends, are typically regions of complex, often disconnected faults. This complexity has traditionally led geologists studying the hazard of active faults to consider such stepovers as important fault segment boundaries, and to give lower weight to earthquake scenarios that involve rupture through the stepover zone...
Authors
Russell W. Graymer, Victoria E. Langenheim, Robert W. Simpson, Robert C. Jachens, David A. Ponce
Loess records: North America Loess records: North America
No abstract available.
Authors
H.M. Roberts, D.R. Muhs, E. Arthur Bettis
Dune fields: mid-latitudes Dune fields: mid-latitudes
No abstract available.
Authors
Jielun Sun, D.R. Muhs
Loess deposits, origins and properties Loess deposits, origins and properties
No abstract available.
Authors
D.R. Muhs
Ages of Quaternary Rio Grande terrace-fill deposits, Albuquerque area, New Mexico Ages of Quaternary Rio Grande terrace-fill deposits, Albuquerque area, New Mexico
Results from luminescence dating on 13 samples from the Albuquerque area show that major-drainage fluvial deposits represent significant periods of aggradation that formed paired, correlatable terraces on the east and west margins of the Rio Grande valley . The youngest terrace fills (Primero Alto) formed during late Pleistocene as a result of streamflow variations with climate cooling...
Authors
Shannon Mahan, Byron D. Stone, Ralph R. Shroba