Victoria Langenheim
Vickie is a Research Geophysicist with the Geology, Minerals, Energy, and Geophysics Science Center
Science and Products
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The offshore Palos Verdes fault zone near San Pedro, Southern California The offshore Palos Verdes fault zone near San Pedro, Southern California
High-resolution seismic-reflection data are combined with a variety of other geophysical and geological data to interpret the offshore structure and earthquake hazards of the San Pedro shelf, near Los Angeles, California. Prominent structures investigated include the Wilmington graben, the Palos Verdes fault zone, various faults below the west part of the San Pedro shelf and slope, and...
Authors
M. A. Fisher, W. R. Normark, V.E. Langenheim, A.J. Calvert, R. Sliter
Isostatic gravity map with simplified geology of the Los Angeles 30 x 60 minute quadrangle Isostatic gravity map with simplified geology of the Los Angeles 30 x 60 minute quadrangle
This isostatic residual gravity map is part of the Southern California Areal Mapping Project (SCAMP) and is intended to promote further understanding of the geology in the Los Angeles 30 x 60 minute quadrangle, California, by serving as a basis for geophysical interpretations and by supporting both geological mapping and topical (especially earthquake) studies. Local spatial variations...
Authors
R .J. Wooley, R. F. Yerkes, V.E. Langenheim, F. C. Chuang
Crustal structure of the Peninsular Ranges batholith from magnetic data: Implications for Gulf of California rifting Crustal structure of the Peninsular Ranges batholith from magnetic data: Implications for Gulf of California rifting
A 70-km-wide belt of magnetic highs extends ???1200 km northwest from the southern tip of the Baja California peninsula into southern California. The anomalies are caused by the mafic western belt of the Peninsular Ranges batholith, which is exposed extensively along the northern 800 km length of the magnetic belt. Modeling indicates that the source of the anomalies extends to mid-to...
Authors
V.E. Langenheim, R.C. Jachens
Isostatic gravity map of the Monterey 30' x 60' quadrangle and adjacent areas, California Isostatic gravity map of the Monterey 30' x 60' quadrangle and adjacent areas, California
The digital dataset consists of one file (monterey_100k.iso) containing 2,385 gravity stations. The file, monterey_100k.iso, contains the principal facts of the gravity stations, with one point coded per line. The format of the data is described below. Each gravity station has a station name, location (latitude and longitude, NAD27 projection), elevation, and an observed gravity reading...
Authors
V.E. Langenheim, S. R. Stiles, R.C. Jachens
Preliminary report on geophysical data in Yavapai County, Arizona Preliminary report on geophysical data in Yavapai County, Arizona
Recently acquired geophysical data provide information on the geologic framework and its effect of groundwater flow and on stream/aquifer interaction in Yavapai County, Arizona. High-resolution aeromagnetic data reflect diverse rock types at and below the topographic surface and have permitted a preliminary interpretation of faults and underlying rock types (in particular, volcanic) that...
Authors
V.E. Langenheim, J.P. Hoffmann, K.W. Blasch, Ed DeWitt, Laurie Wirt
Aeromagnetic Expression of Buried Basaltic Volcanoes Near Yucca Mountain, Nevada Aeromagnetic Expression of Buried Basaltic Volcanoes Near Yucca Mountain, Nevada
A high-resolution aeromagnetic survey has defined a number of small dipolar anomalies indicating the presence of magnetic bodies buried beneath the surface of Crater Flat and the Amargosa Desert. Results of potential-field modeling indicate that isolated, small-volume, highly magnetic bodies embedded within the alluvial deposits of both areas produce the anomalies. Their physical...
Authors
Dennis W. O’Leary, E. A. Mankinen, R.J. Blakely, V.E. Langenheim, D. A. Ponce
Science and Products
Filter Total Items: 34
No Result Found
Filter Total Items: 189
The offshore Palos Verdes fault zone near San Pedro, Southern California The offshore Palos Verdes fault zone near San Pedro, Southern California
High-resolution seismic-reflection data are combined with a variety of other geophysical and geological data to interpret the offshore structure and earthquake hazards of the San Pedro shelf, near Los Angeles, California. Prominent structures investigated include the Wilmington graben, the Palos Verdes fault zone, various faults below the west part of the San Pedro shelf and slope, and...
Authors
M. A. Fisher, W. R. Normark, V.E. Langenheim, A.J. Calvert, R. Sliter
Isostatic gravity map with simplified geology of the Los Angeles 30 x 60 minute quadrangle Isostatic gravity map with simplified geology of the Los Angeles 30 x 60 minute quadrangle
This isostatic residual gravity map is part of the Southern California Areal Mapping Project (SCAMP) and is intended to promote further understanding of the geology in the Los Angeles 30 x 60 minute quadrangle, California, by serving as a basis for geophysical interpretations and by supporting both geological mapping and topical (especially earthquake) studies. Local spatial variations...
Authors
R .J. Wooley, R. F. Yerkes, V.E. Langenheim, F. C. Chuang
Crustal structure of the Peninsular Ranges batholith from magnetic data: Implications for Gulf of California rifting Crustal structure of the Peninsular Ranges batholith from magnetic data: Implications for Gulf of California rifting
A 70-km-wide belt of magnetic highs extends ???1200 km northwest from the southern tip of the Baja California peninsula into southern California. The anomalies are caused by the mafic western belt of the Peninsular Ranges batholith, which is exposed extensively along the northern 800 km length of the magnetic belt. Modeling indicates that the source of the anomalies extends to mid-to...
Authors
V.E. Langenheim, R.C. Jachens
Isostatic gravity map of the Monterey 30' x 60' quadrangle and adjacent areas, California Isostatic gravity map of the Monterey 30' x 60' quadrangle and adjacent areas, California
The digital dataset consists of one file (monterey_100k.iso) containing 2,385 gravity stations. The file, monterey_100k.iso, contains the principal facts of the gravity stations, with one point coded per line. The format of the data is described below. Each gravity station has a station name, location (latitude and longitude, NAD27 projection), elevation, and an observed gravity reading...
Authors
V.E. Langenheim, S. R. Stiles, R.C. Jachens
Preliminary report on geophysical data in Yavapai County, Arizona Preliminary report on geophysical data in Yavapai County, Arizona
Recently acquired geophysical data provide information on the geologic framework and its effect of groundwater flow and on stream/aquifer interaction in Yavapai County, Arizona. High-resolution aeromagnetic data reflect diverse rock types at and below the topographic surface and have permitted a preliminary interpretation of faults and underlying rock types (in particular, volcanic) that...
Authors
V.E. Langenheim, J.P. Hoffmann, K.W. Blasch, Ed DeWitt, Laurie Wirt
Aeromagnetic Expression of Buried Basaltic Volcanoes Near Yucca Mountain, Nevada Aeromagnetic Expression of Buried Basaltic Volcanoes Near Yucca Mountain, Nevada
A high-resolution aeromagnetic survey has defined a number of small dipolar anomalies indicating the presence of magnetic bodies buried beneath the surface of Crater Flat and the Amargosa Desert. Results of potential-field modeling indicate that isolated, small-volume, highly magnetic bodies embedded within the alluvial deposits of both areas produce the anomalies. Their physical...
Authors
Dennis W. O’Leary, E. A. Mankinen, R.J. Blakely, V.E. Langenheim, D. A. Ponce