Publications
Here you will find publications, reports and articles produced by geology, energy, and mineral scientists. For a comprehensive listing of all USGS publications, click the button below.
Filter Total Items: 1349
Maps of quaternary deposits and liquefaction susceptibility in the Central San Francisco Bay Region, California 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...
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
By
Characterization of unsaturated zone hydrogeologic units using matrix properties and depositional history in a complex volcanic environment Characterization of unsaturated zone hydrogeologic units using matrix properties and depositional history in a complex volcanic environment
Characterization of the physical and unsaturated hydrologic properties of subsurface materials is necessary to calculate flow and transport for land use practices and to evaluate subsurface processes such as perched water or lateral diversion of water, which are influenced by features such as faults, fractures, and abrupt changes in lithology. Input for numerical flow models typically...
Authors
Lorraine E. Flint, David C. Buesch, Alan L. Flint
Reducing risk in exploration under cover Reducing risk in exploration under cover
No abstract available.
Authors
Donald A. Singer, Ryoichi Kouda
Lithostratigraphy and shear-wave velocity in the crystallized Topopah Spring Tuff, Yucca Mountain, Nevada Lithostratigraphy and shear-wave velocity in the crystallized Topopah Spring Tuff, Yucca Mountain, Nevada
Evaluation of the potential future response to seismic events of the proposed spent nuclear fuel and high-level radioactive waste repository at Yucca Mountain, Nevada, is in part based on the seismic properties of the host rock, the 12.8-million-year-old Topopah Spring Tuff. Because of the processes that formed the tuff, the densely welded and crystallized part has three lithophysal and...
Authors
D.C. Buesch, K.H. Stokoe, K.C. Won, Y.J. Seong, J.L. Jung, M.D. Schuhen
New insights into Arctic paleogeography and tectonics from U-Pb detrital zircon geochronology New insights into Arctic paleogeography and tectonics from U-Pb detrital zircon geochronology
To test existing models for the formation of the Amerasian Basin, detrital zircon suites from 12 samples of Triassic sandstone from the circum-Arctic region were dated by laser ablation-inductively coupled plasma-mass spectrometry (ICP-MS). The northern Verkhoyansk (NE Russia) has Permo-Carboniferous (265-320 Ma) and Cambro-Silurian (410-505 Ma) zircon populations derived via river...
Authors
E. L. Miller, J. Toro, G. Gehrels, J.M. Amato, A. Prokopiev, M.I. Tuchkova, V.V. Akinin, T.A. Dumitru, Thomas E. Moore, M.P. Cecile
Garnet--An Essential Industrial Mineral and January's Birthstone 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...
Authors
James G. Evans, Phillip R. Moyle, David G. Frank, Donald W. Olson
Linking middle-school teachers to Earthscope Linking middle-school teachers to Earthscope
EarthScope is a multidisciplinary geophysical investigation of the structure and deformation of the North American continent. Components include a transportable array of digital seismometers (USArray) that will image the continental crust and underlying mantle, and Global Positioning System (GPS) receivers and strainmeters (Plate Boundary Observatory, PBO) that will measure tectonic and...
Authors
R. Butler, E. Bishop, C. Ault, B. Atwater, B. Magura, C. Hedeen, R. Blakely, Ray E. Wells, K. Shay, R. Wagner, T. Southworth-Neumeyer, D. Connor
Birth of the lower Colorado River–Stratigraphic and geomorphic evidence for its inception near the conjunction of Nevada, Arizona, and California Birth of the lower Colorado River–Stratigraphic and geomorphic evidence for its inception near the conjunction of Nevada, Arizona, and California
A detailed record of the late Cenozoic history of the lower Colorado River can be inferred from alluvial and (likely) lacustrine stratigraphy exposed in dissected alluvial basins below the mouth of the Grand Canyon. Numerous sites in Mohave, Cottonwood, and Detrital valleys contain stratigraphic records that directly bear on the mode, timing, and consequences of the river’s inception and
Authors
Kyle House, Keith A. Howard, J. W. Bell, M. E. Perkins, J. E. Faulds, A. Brock
Assessment of drift stability with consideration of spatial variation of lithophysal cavities at Yucca Mountain Assessment of drift stability with consideration of spatial variation of lithophysal cavities at Yucca Mountain
No abstract available.
Authors
M. Lin, Mark P. Board, D.C. Kicker, J. Leem, B. Damjanac, David C. Buesch
Net dextral slip, Neogene San Gregorio–Hosgri fault zone, coastal California: Geologic evidence and tectonic implications Net dextral slip, Neogene San Gregorio–Hosgri fault zone, coastal California: Geologic evidence and tectonic implications
Reinterpretation of onshore and offshore geologic mapping, examination of a key offshore well core, and revision of cross-fault ties indicate Neogene dextral strike slip of 156 ± 4 km along the San Gregorio–Hosgri fault zone, a major strand of the San Andreas transform system in coastal California. Delineating the full course of the fault, defining net slip across it, and showing its...
Authors
William R. Dickinson, Mihai N. Ducea, Lewis I. Rosenberg, H. Gary Greene, Stephan A. Graham, Joseph C. Clark, Gerald E. Weber, Steven Kidder, W. Gary Ernst, Earl E. Brabb
Preliminary integrated geologic map databases for the United States: Digital data for the reconnaissance geologic map of the Kodiak Islands, Alaska Preliminary integrated geologic map databases for the United States: Digital data for the reconnaissance geologic map of the Kodiak Islands, Alaska
No abstract available.
Authors
Frederic H. Wilson, Keith A. Labay, Solmaz Mohadjer, Nora B. Shew
Preliminary integrated geologic map databases for the United States: Digital data for the geology of Wrangell-Saint Elias National Park and Preserve, Alaska Preliminary integrated geologic map databases for the United States: Digital data for the geology of Wrangell-Saint Elias National Park and Preserve, Alaska
No abstract available.
Authors
Frederic H. Wilson, Keith A. Labay, Nora B. Shew, Cindi C. Preller, Solmaz Mohadjer, Donald H. Richter