Langenheim, Victoria E.


Isostatic gravity map of the Las Vegas 30'x60' quadrangle, California and Nevada

Includes principal facts (gravity observations) for 2,506 stations.

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Principal facts for gravity stations and physical property measurements in the Lake Mead 30x60 minute quadrangle, Nevada and Arizona

Gravity data were collected in support of geologic mapping of the quadrangle. In addition, older gravity data were reprocessed for consistency and included, as well as 250 measurements of density and magnetic susceptibility.

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Preliminary potential-field constraints on the geometry of the San Fernando basin, southern California

Results of mathematical modeling of gravity and magnetic anomaly data to infer the geologic structure of the area

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Isostatic gravity map of the Monterey 30x60 minute quadrangle and adjacent areas, California

Gravity measurements to support regional mapping and hydrologic studies

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Isostatic gravity map with geology of the Santa Ana 30'x60' quadrangle, southern California

Contour map of isostatic gravity anomaly with bedrock geology, and principal facts for the gravity stations as a separate data file.

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Preliminary isostatic gravity map of the Sonoma Volcanic field and vicinity, Sonoma and Napa counties, California

Gravity station data from three separate surveys

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Preliminary gravity and magnetic data of the Lake Pillsbury northern Coast Ranges, California

Report with excel tables showing principal facts (gravity observation data) and ground magnetic data.

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Preliminary isostatic gravity map of Joshua Tree National Park and vicinity, southern California

Map with excel tables showing principal facts (gravity observation data).

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Aeromagnetic survey map of the central California coast ranges

Intended to promote further understanding of the geology and structure in the central California Coast Ranges, includes downloadable gridded point database.

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Gravity and magnetic investigations of the Mojave National Preserve and adjacent areas, California and Nevada

Gravity station and rock physical property data used to infer geologic structure of the area

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Preliminary Aeromagnetic Map of Joshua Tree National Park and Vicinity, Southern California

This map is intended to promote further understanding of the geology and structure in the region by serving as a basis for geophysical interpretations and by supporting geological mapping, water-resource investigations, and various topical studies.

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Aeromagnetic and aeromagnetic-based geologic maps of the Coastal Belt, Franciscan Complex, northern California

New aeromagnetic point observation data with grids as well

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Magnetic map of the Irish Hills and surrounding areas, San Luis Obispo County, central California

Database includes new helicopter aeromagnetic data, point locations of the local maximum horizontal gradient derived from the aeromagnetic data, and physical property data.

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Aeromagnetic data, processing, and maps of Fort Irwin and vicinity, California

Aeromagnetic data help provide the underpinnings of a hydrogeologic framework for Fort Irwin by locating inferred structural features or grain that influence groundwater flow. Magnetization boundaries defined by horizontal-gradient analyses coincide lo

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Aeromagnetic survey map of Sacramento Valley, California

<p class="p1">Three aeromagnetic surveys were flown to improve understanding of the geology and structure in the Sacramento Valley. The resulting data serve as a basis for geophysical interpretations, and support geological mapping, water and mineral reso

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High-resolution gravity and seismic-refraction surveys of the Smoke Tree Wash area, Joshua Tree National Park, California

These data were acquired to determine the thickness of valley-fill deposits and to delineate geologic structures that might influence groundwater flow beneath this area.

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Aeromagnetic survey of the Amargosa desert, Nevada and California

Grid data files along with maps in PDF and PostScript accompany this report

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Summary of geophysical investigations of the Death Valley regional water-flow modeling project, Nevada and California

Magnetic and gravity anomaly and structure contour data

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Gravity data along LARSE (Los Angeles Regional Seismic Experiment) line 2, southern California

Data taken across the San Fernando Basin and Transverse Ranges to help characterize the structure underlying this area

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Isostatic gravity map with simplified geology of the Los Angeles 30x60 minute Quadrangle

Includes detailed point measurements of gravity

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Geologic and geophysical framework of the Santa Rosa 7.5' quadrangle, Sonoma county, California

Geologic units, structural features, magnetic and gravity anomaly contours and radiometric ages of this area

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Preliminary isostatic residual gravity anomaly map of Paso Robles 30 x 60 minute quadrangle, California

Includes 2,604 (170 not previously published) gravity station measurements with calculations of free-air, simple Bouguer, complete Bouguer, and isostatic anomaly.

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Geologic and geophysical maps of the eastern three-fourths of the Cambria 30 x 60 degree quadrangle, central California Coast Ranges

Contains geologic, gravity anomaly, and aeromagnetic anomaly maps and the associated geologic and geophysical databases (ArcMap), as well as complete descriptions of the geologic map units and the structural relations in the mapped area.

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Gravity survey and interpretation of Fort Irwin and vicinity, Mojave Desert, California

Provides a view of alluvial basins, shapes, areal extents, and approximate thicknesses of alluvial fill. Gravity field is separated into density variations in the basement complex and distribution of Cenozoic fill with its 3-D thickness representation.

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Geologic structure of the Yucaipa area inferred from gravity data, San Bernardino and Riverside Counties, California

In the spring of 2009, the U.S. Geological Survey, in cooperation with the San Bernardino Valley Municipal Water District, began working on a gravity survey in the Yucaipa area to explore the three-dimensional shape of the sedimentary fill (

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Principal facts for gravity stations in the vicinity of Coyote Spring valley, Nevada, with initial gravity modeling results

Gravity study to help define the shapes of young basins filled with Cenozoic rocks and alluvium, and to identify any possible faults within these basins that might influence the movement of groundwater.

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Digital tabulation of stratigraphic data from oil and gas wells in the Santa Maria Basin and surrounding areas, central California coast

This report makes available a large well dataset so that subsurface stratigraphic data are available in digital form for use within a GIS and in construction of three-dimensional models to address regional stratigraphic and structural questions.

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Isostatic gravity map of the Point Sur 30 x 60 quadrangle and adjacent areas, California

Includes 802 gravity station measurements with isostatic, free-air, simple and complete Bouguer anomalies, and terrain correction.

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Geologic and geophysical maps of the El Casco 7.5′ quadrangle, Riverside County, southern California, with accompanying geologic-map database

In addition to geologic units and structural features, these data include gravity observations and horizontal gravity gradient information.

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Aeromagnetic expression of buried basaltic volcanoes near Yucca Mountain, Nevada

Mathematical modeling and analysis of aeromagnetic anomaly data (gridded data provide in another report).

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