Victoria Langenheim
Vickie is a Research Geophysicist with the Geology, Minerals, Energy, and Geophysics Science Center
Science and Products
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Thickness of Cenozoic Deposits of Yucca Flat Inferred from Gravity Data, Nevada Test Site, Nevada
The basin-basement contact for Yucca Flat was modeled using isostatic gravity data, a linear density-depth function for the basin deposits, and drill-hole constraints to produce a digital database of both the depth to basement and the gravitational anomaly associated with the basement rocks. The model predicts a depth of roughly 2,500 m in the deepest, southern part of the basin. The model shows o
Authors
G. A. Phelps, V. E. Langenheim, R.C. Jachens
Cenozoic basins of the Death Valley extended terrane as reflected in regional-scale gravity anomalies
The contrast in density between basin-filling deposits and underlying basement rocks in the Basin and Range province produces a distinctive pattern of gravity anomalies that roughly correlates with basin-and-range topography. This is especially apparent in the Death Valley extended terrane, where minima in residual gravity closely correspond to well-known extensional basins, such as Owens Valley,
Authors
Richard J. Blakely, Robert C. Jachens, James P. Calzia, Victoria Langenheim
Neogene contraction between the San Andreas fault and the Santa Clara Valley, San Francisco Bay region, California
In the southern San Francisco Bay region of California, oblique dextral reverse faults that verge northeastward from the San Andreas fault experienced triggered slip during the 1989 M7.1 Loma Prieta earthquake. The role of these range-front thrusts in the evolution of the San Andreas fault system and the future seismic hazard that they may pose to the urban Santa Clara Valley are poorly understood
Authors
Robert J. McLaughlin, V. E. Langenheim, K. M. Schmidt, R.C. Jachens, R. G. Stanley, A. S. Jayko, K. A. McDougall, J. C. Tinsley, Z. C. Valin
Inversion of gravity data to define the pre-Tertiary surface and regional structures possibly influencing ground-water flow in the Pahute Mesa-Oasis Valley region, Nye County, Nevada
A three-dimensional inversion of gravity data from the Pahute Mesa–Oasis Valley region reveals a topographically complex pre-Tertiary basement surface. Beneath Pahute Mesa, the thickness of the Tertiary volcanic deposits may exceed 5 km within the Silent Canyon caldera complex. South of Pahute Mesa in Oasis Valley, basement is shallower (< 1 km) but between this valley and the Timber Mountain cald
Authors
T. G. Hildenbrand, V. E. Langenheim, E. A. Mankinen, E. H. McKee
Isostatic gravity map of the Las Vegas 30 x 60 minute quadrangle, California and Nevada
No abstract available.
Authors
V. E. Langenheim, R.I. Morin, J. G. Davidson, K. M. Schmidt, H. R. Blank
Gravity and aeromagnetic models along the Los Angeles Region Seismic Experiment (Line 1), California
No abstract available.
Authors
V. E. Langenheim
Principal facts for gravity stations and physical property measurements in the Lake Mead 30' by 60' quadrangle, Nevada and Arizona
The U.S. Geological Survey (USGS) collected 811 gravity stations on the Lake Mead 30' by 60' quadrangle from October, 1997 to September, 1999. These data were collected in support of geologic mapping of the Lake Mead quadrangle. In addition to these new data, gravity stations were compiled from a number of sources. These stations were reprocessed according to the reduction method described below a
Authors
V. E. Langenheim, J. G. Davidson, M.L. Anderson, H. R. Blank
Interpretation of an aeromagnetic survey over part of Virgin Valley, Tule Desert, and the valley surrounding Meadow Valley Wash, southeastern Nevada
No abstract available.
Authors
R.C. Jachens, D.L. Dixon, V. E. Langenheim, R. L. Morin
Preliminary geologic map of the Valley Quadrangle, Clark County, Nevada
No abstract available.
Authors
S.C. Lundstrom, W. R. Page, V. E. Langenheim, O.D. Young, S. A. Mahan, G. L. Dixon
Thickness of Cenozoic deposits and location and geometry of the Las Vegas Valley shear zone, Nevada, based on gravity, seismic-reflection, and aeromagnetic data
No abstract available.
Authors
V. E. Langenheim, John Grow, J. J. Miller, J. D. Davidson, E. Robison
Three-dimensional model of Paleozoic basement beneath Amargosa Desert and Pahrump Valley, California and Nevada: Implications for tectonic evolution and water resources
No abstract available.
Authors
R. J. Blakely, R. L. Morin, E. H. McKee, K. M. Schmidt, V. E. Langenheim, G. L. Dixon
Implications of seismic reflection and potential field geophysical data on the structural framework of the Yucca Mountain-Crater Flat region, Nevada
Seismic reflection and gravity profiles collected across Yucca Mountain, Nevada, together with geologic data, provide evidence against proposed active detachment faults at shallow depth along the pre-Tertiary–Tertiary contact beneath this potential repository for high-level nuclear waste. The new geophysical data show that the inferred pre-Tertiary–Tertiary contact is offset by moderate- to high-a
Authors
T. M. Brocher, W.C. Hunter, V. E. Langenheim
Science and Products
Filter Total Items: 22
No Result Found
Filter Total Items: 185
Thickness of Cenozoic Deposits of Yucca Flat Inferred from Gravity Data, Nevada Test Site, Nevada
The basin-basement contact for Yucca Flat was modeled using isostatic gravity data, a linear density-depth function for the basin deposits, and drill-hole constraints to produce a digital database of both the depth to basement and the gravitational anomaly associated with the basement rocks. The model predicts a depth of roughly 2,500 m in the deepest, southern part of the basin. The model shows o
Authors
G. A. Phelps, V. E. Langenheim, R.C. Jachens
Cenozoic basins of the Death Valley extended terrane as reflected in regional-scale gravity anomalies
The contrast in density between basin-filling deposits and underlying basement rocks in the Basin and Range province produces a distinctive pattern of gravity anomalies that roughly correlates with basin-and-range topography. This is especially apparent in the Death Valley extended terrane, where minima in residual gravity closely correspond to well-known extensional basins, such as Owens Valley,
Authors
Richard J. Blakely, Robert C. Jachens, James P. Calzia, Victoria Langenheim
Neogene contraction between the San Andreas fault and the Santa Clara Valley, San Francisco Bay region, California
In the southern San Francisco Bay region of California, oblique dextral reverse faults that verge northeastward from the San Andreas fault experienced triggered slip during the 1989 M7.1 Loma Prieta earthquake. The role of these range-front thrusts in the evolution of the San Andreas fault system and the future seismic hazard that they may pose to the urban Santa Clara Valley are poorly understood
Authors
Robert J. McLaughlin, V. E. Langenheim, K. M. Schmidt, R.C. Jachens, R. G. Stanley, A. S. Jayko, K. A. McDougall, J. C. Tinsley, Z. C. Valin
Inversion of gravity data to define the pre-Tertiary surface and regional structures possibly influencing ground-water flow in the Pahute Mesa-Oasis Valley region, Nye County, Nevada
A three-dimensional inversion of gravity data from the Pahute Mesa–Oasis Valley region reveals a topographically complex pre-Tertiary basement surface. Beneath Pahute Mesa, the thickness of the Tertiary volcanic deposits may exceed 5 km within the Silent Canyon caldera complex. South of Pahute Mesa in Oasis Valley, basement is shallower (< 1 km) but between this valley and the Timber Mountain cald
Authors
T. G. Hildenbrand, V. E. Langenheim, E. A. Mankinen, E. H. McKee
Isostatic gravity map of the Las Vegas 30 x 60 minute quadrangle, California and Nevada
No abstract available.
Authors
V. E. Langenheim, R.I. Morin, J. G. Davidson, K. M. Schmidt, H. R. Blank
Gravity and aeromagnetic models along the Los Angeles Region Seismic Experiment (Line 1), California
No abstract available.
Authors
V. E. Langenheim
Principal facts for gravity stations and physical property measurements in the Lake Mead 30' by 60' quadrangle, Nevada and Arizona
The U.S. Geological Survey (USGS) collected 811 gravity stations on the Lake Mead 30' by 60' quadrangle from October, 1997 to September, 1999. These data were collected in support of geologic mapping of the Lake Mead quadrangle. In addition to these new data, gravity stations were compiled from a number of sources. These stations were reprocessed according to the reduction method described below a
Authors
V. E. Langenheim, J. G. Davidson, M.L. Anderson, H. R. Blank
Interpretation of an aeromagnetic survey over part of Virgin Valley, Tule Desert, and the valley surrounding Meadow Valley Wash, southeastern Nevada
No abstract available.
Authors
R.C. Jachens, D.L. Dixon, V. E. Langenheim, R. L. Morin
Preliminary geologic map of the Valley Quadrangle, Clark County, Nevada
No abstract available.
Authors
S.C. Lundstrom, W. R. Page, V. E. Langenheim, O.D. Young, S. A. Mahan, G. L. Dixon
Thickness of Cenozoic deposits and location and geometry of the Las Vegas Valley shear zone, Nevada, based on gravity, seismic-reflection, and aeromagnetic data
No abstract available.
Authors
V. E. Langenheim, John Grow, J. J. Miller, J. D. Davidson, E. Robison
Three-dimensional model of Paleozoic basement beneath Amargosa Desert and Pahrump Valley, California and Nevada: Implications for tectonic evolution and water resources
No abstract available.
Authors
R. J. Blakely, R. L. Morin, E. H. McKee, K. M. Schmidt, V. E. Langenheim, G. L. Dixon
Implications of seismic reflection and potential field geophysical data on the structural framework of the Yucca Mountain-Crater Flat region, Nevada
Seismic reflection and gravity profiles collected across Yucca Mountain, Nevada, together with geologic data, provide evidence against proposed active detachment faults at shallow depth along the pre-Tertiary–Tertiary contact beneath this potential repository for high-level nuclear waste. The new geophysical data show that the inferred pre-Tertiary–Tertiary contact is offset by moderate- to high-a
Authors
T. M. Brocher, W.C. Hunter, V. E. Langenheim