Publications
Publications from the staff of the Geology, Minerals, Energy, and Geophysics Science Center
Filter Total Items: 2354
A Preliminary Investigation of The Structure of Southern Yucca Flat, Massachusetts Mountain, and CP Basin, Nevada Test Site, Nevada, Based on Geophysical Modeling
New gravity and magnetic data collected in the vicinity of Massachusetts Mountain and CP basin (Nevada Test Site, NV) provides a more complex view of the structural relationships present in the vicinity of CP basin than previous geologic models, helps define the position and extent of structures in southern Yucca Flat and CP basin, and better constrains the configuration of the basement structure
Authors
Geoffrey A. Phelps, Leigh Justet, Barry C. Moring, Carter W. Roberts
Maps of quaternary deposits and liquefaction susceptibility in the Central San Francisco Bay Region, California
This report presents a map and database of Quaternary deposits and liquefaction susceptibility for the urban core of the San Francisco Bay region. It supercedes the equivalent area of U.S. Geological Survey Open-File Report 00-444 (Knudsen and others, 2000), which covers the larger 9-county San Francisco Bay region. The report consists of (1) a spatial database, (2) two small-scale colored maps (
Authors
Robert C. Witter, Keith L. Knudsen, Janet M. Sowers, Carl M. Wentworth, Richard D. Koehler, Carolyn E. Randolph, Suzanna K. Brooks, Kathleen D. Gans
USGS science in Menlo Park -- a science strategy for the U.S. Geological Survey Menlo Park Science Center, 2005-2015
In the spring of 2004, the U.S. Geological Survey (USGS) Menlo Park Center Council commissioned an interdisciplinary working group to develop a forward-looking science strategy for the USGS Menlo Park Science Center in California (hereafter also referred to as "the Center"). The Center has been the flagship research center for the USGS in the western United States for more than 50 years, and the C
Authors
Thomas M. Brocher, Michael D. Carr, David L. Halsing, David John, Victoria E. Langenheim, Margaret T. Mangan, Mark C. Marvin-DiPasquale, John Y. Takekawa, Claire R. Tiedeman
By
Natural Hazards Mission Area, Water Resources Mission Area, Ecosystems Mission Area, Volcano Hazards Program, Earthquake Hazards Program, Volcano Science Center, Earthquake Science Center, Western Ecological Research Center (WERC), Alaska Science Center, Geology, Minerals, Energy, and Geophysics Science Center
Temperature variations at diffuse and focused flow hydrothermal vent sites along the northern East Pacific Rise
In the decade following documented volcanic activity on the East Pacific Rise near 9°50′N, we monitored hydrothermal vent fluid temperature variations in conjunction with approximately yearly vent fluid sampling to better understand the processes and physical conditions that govern the evolution of seafloor hydrothermal systems. The temperature of both diffuse flow (low-temperature) and focused fl
Authors
Daniel S. Scheirer, Timothy M. Shank, Daniel J. Fornari
The toxicological geochemistry of Earth materials: An overview of processes and the interdisciplinary methods used to understand them
A broad spectrum of earth materials have been linked to, blamed for, and/or debated as sources for disease. In some cases, the links are clear. For example, excessive exposures to mineral dusts have long been recognized for their role in diseases such as: asbestosis, mesothelioma, and lung cancers (asbestos); silicosis and lung cancer (silica dusts); and coal-workers pneumoconiosis (coal dust). Le
Authors
Geoffrey S. Plumlee, Suzette A. Morman, Thomas L. Ziegler
Paleozoic tectonic and metallogenetic evolution of pericratonic terranes in Yukon, northern British Columbia and eastern Alaska
No abstract available.
Authors
JoAnne L. Nelson, Maurice Colpron, Stephen Piercey, Cynthia Dusel-Bacon, Donald Murphy, Charlie Roots
Paleozoic magmatism and crustal recycling along the ancient Pacific margin of North America, northern Cordillera
No abstract available.
Authors
Stephen Piercey, JoAnne L. Nelson, Maurice Colpron, Cynthia Dusel-Bacon, Renée-Luce Simard, Charlie Roots
Lead isotopic constraints on the metallogeny of middle and late Paleozoic syngenetic base metal occurrences in the Yukon-Tanana and Slide Mountain/Seventymile Terranes and adjacent portions of the North American miogeocline
No abstract available.
Authors
J.K. Mortensen, Cynthia Dusel-Bacon, J. Hunt, J. Gabites
Paleozoic tectonic and metallogenic evolution of the pericratonic rocks of east-central Alaska and adjacent Yukon Territory
No abstract available.
Authors
JoAnne L. Nelson, Maurice Colpron, Stephen Piercey, Cynthia Dusel-Bacon, Donald Murphy, Charlie Roots
Reply to the discussion by F. Lagroix and S.K. Banerjee of "Geochemical evidence for the origin of late Quaternary loess in central Alaska"
No abstract available.
Authors
Daniel R. Muhs, James R. Budahn
GP Workbench Manual: Technical Manual, User's Guide, and Software Guide
GP Workbench is an open-source general-purpose geophysical data processing software package written primarily for ground penetrating radar (GPR) data. It also includes support for several USGS prototype electromagnetic instruments such as the VETEM and ALLTEM. The two main programs in the package are GP Workbench and GP Wave Utilities. GP Workbench has routines for filtering, gridding, and migrati
Authors
Charles P. Oden, Craig W. Moulton
Garnet--An Essential Industrial Mineral and January's Birthstone
Garnet is one of the most common minerals in the world. Occurring in almost any color, it is most widely known for its beauty as a gem stone. Because of its hardness and other properties, garnet is also an essential industrial mineral used in abrasive products, non-slip surfaces, and filtration. To help manage our Nation's resources of such essential minerals, the U.S. Geological Survey (USGS) pro
Authors
James G. Evans, Phillip R. Moyle, David G. Frank, Donald W. Olson