Publications
Publications from the staff of the Geology, Minerals, Energy, and Geophysics Science Center
Filter Total Items: 2354
Geophysical Studies Based on Gravity and Seismic Data of Tule Desert, Meadow Valley Wash, and California Wash Basins, Southern Nevada
Gravity and seismic data from Tule Desert, Meadow Valley Wash, and California Wash, Nevada, provide insight into the subsurface geometry of these three basins that lie adjacent to rapidly developing areas of Clark County, Nevada. Each of the basins is the product of Tertiary extension accommodated with the general form of north-south oriented, asymmetrically-faulted half-grabens. Geophysical inver
Authors
Daniel S. Scheirer, William R. Page, John J. Miller
Aeromagnetic Survey in Western Afghanistan: A Web Site for Distribution of Data
Aeromagnetic and related data were digitized from 1976 magnetic field
and survey route location maps of western Afghanistan. The magnetic
field data were digitized along contour lines from 33 maps in a series
entitled 'Map of Magnetic Field of Afghanistan (Western Area) Delta-Ta
Isolines,' compiled by V. A. Cnjagev and A. F. Bukhmastov. The survey
route locatio
Authors
Ronald E. Sweeney, Robert P. Kucks, Patricia L. Hill, Carol A. Finn
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 three nonl
Authors
D.C. Buesch, K.H. Stokoe, K.C. Won, Y.J. Seong, J.L. Jung, M.D. Schuhen
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 volcanic d
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
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 includes par
Authors
Lorraine E. Flint, David C. Buesch, Alan L. Flint
Distribution, 14C chronology, and paleomagnetism of latest Pleistocene and Holocene lava flows at Haleakala volcano, Island of Maui, Hawai'i: A revision of lava flow hazard zones
New mapping and 60 new radiocarbon ages define the age and distribution of latest Pleistocene and Holocene (past 13,000 years) lava flows at Haleakalā volcano, Island of Maui. Paleomagnetic directions were determined for 118 sites, of which 89 are in lava flows younger than 13,000 years. The paleomagnetic data, in conjunction with a reference paleosecular variation (PSV) curve for the Hawaiian Isl
Authors
David R. Sherrod, Jonathan T. Hagstrum, John P. McGeehin, Duane E. Champion, Frank A. Trusdell
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 systems from th
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
Modeling spatial and temporal variations in temperature and salinity during stratification and overturn in Dexter Pit Lake, Tuscarora, Nevada, USA
This paper examines the seasonal cycling of temperature and salinity in Dexter pit lake in arid northern Nevada, and describes an approach for modeling the physical processes that operate in such systems. The pit lake contains about 596,200 m3 of dilute, near neutral (pHs 6.7–9) water. Profiles of temperature, conductivity, and selected element concentrations were measured almost monthly during 19
Authors
Laurie S. Balistrieri, R.N. Tempel, L.L. Stillings, L.A. Shevenell
Reducing risk in exploration under cover
No abstract available.
Authors
Donald A. Singer, Ryoichi Kouda
Ice sheets and sea level: response
No abstract available.
Authors
Jonathan T. Overpeck, Bette L. Otto-Bliesner, Gifford H. Miller, Richard B. Alley, Daniel R. Muhs, Shawn J. Marshall
The utility of gravity and magnetic methods for understanding subsurface hydrogeology in large alluvial watersheds: Examples from urbanized basins of the Western United States
Population continues to grow rapidly within the large alluvial watersheds associated with structural basins of the Basin and Range Province and the Rio Grande rift of the western United States. Increasing demands on ground‐water resources in these basins, combined with water‐rights disputes, have amplified the need for improved understanding of subsurface hydrogeology. Gravity and magnetic methods
Authors
V. J. S. Grauch, Victoria Langenheim
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 integrati
Authors
Kyle House, Keith A. Howard, J. W. Bell, M. E. Perkins, J. E. Faulds, A. Brock