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Victoria Langenheim

Vickie is a Research Geophysicist with the Geology, Minerals, Energy, and Geophysics Science Center

Science and Products

San Andreas Fault in the Carrizo Plain

San Andreas Fault System in Southern California

Southern California is home to nearly 24 million people and countless visitors who live, recreate, consume resources, and face the risk of natural hazards in the region. This project produces high-quality, multi-purpose geologic maps, databases, and reports that portray our understanding of the region’s four-dimensional geologic framework. We conduct stratigraphic, structural, geomorphological...
By
Core Science Systems Mission Area, Geology, Minerals, Energy, and Geophysics Science Center
San Andreas Fault System in Southern California

San Andreas Fault System in Southern California

Southern California is home to nearly 24 million people and countless visitors who live, recreate, consume resources, and face the risk of natural hazards in the region. This project produces high-quality, multi-purpose geologic maps, databases, and reports that portray our understanding of the region’s four-dimensional geologic framework. We conduct stratigraphic, structural, geomorphological...
Learn More
3-D Geologic Map

2D and 3D Geologic Mapping and Earthquake Hazards of California

This project uses geologic and geophysical mapping to build an earth-science framework for scientific investigations that include assessments of critical resources, such as groundwater, and of hazards, such as those resulting from earthquakes, in California west of and including the Sierra Nevada and Cascade arc. Questions of particular interest include: What are the geometries, slip rates, and...
By
National Cooperative Geologic Mapping Program, California Water Science Center, Geology, Minerals, Energy, and Geophysics Science Center
2D and 3D Geologic Mapping and Earthquake Hazards of California

2D and 3D Geologic Mapping and Earthquake Hazards of California

This project uses geologic and geophysical mapping to build an earth-science framework for scientific investigations that include assessments of critical resources, such as groundwater, and of hazards, such as those resulting from earthquakes, in California west of and including the Sierra Nevada and Cascade arc. Questions of particular interest include: What are the geometries, slip rates, and...
Learn More
Filter Total Items: 36

Seismic-reflection profiles in Chuckwalla Valley, southeastern California Seismic-reflection profiles in Chuckwalla Valley, southeastern California

Two industry seismic-reflection profiles in Chuckwalla Valley (southeastern California) were donated by Buckhorn Petroleum to the CALCRUST program in ~1987. USGS personnel Jeff Wilson, Eric Geist, and Jill McCarthy reprocessed the seismic reflection data, concentrating on imaging reflections below the Cenozoic basin fill using pre-stack techniques. This data release describes the...
By
Geology, Minerals, Energy, and Geophysics Science Center

Geophysical grids, horizontal gradient maxima and depth to bedrock of the Blythe region, California and Arizona Geophysical grids, horizontal gradient maxima and depth to bedrock of the Blythe region, California and Arizona

This data release contains (1) geophysical grids, (2) horizontal gravity and residual magnetic gradient maxima and (3) inputs to a gravity inversion of Cenozoic basin thickness based on gravity measurements of the Blythe region of California and Arizona. Gridded data (geotiffs.zip) consist of the input isostatic gravity grid as well as grids of Cenozoic basin thickness and bedrock...
By
Geology, Minerals, Energy, and Geophysics Science Center

Gravity and physical property data of northeastern California (ver. 2.0, December 2025) Gravity and physical property data of northeastern California (ver. 2.0, December 2025)

This data release contains principal facts of gravity measurements by previous studies and collected by the U.S. Geological Survey in 1994-2023 and a compilation of existing and new density and magnetic susceptibility data in northeastern California. Gravity data are processed to isostatic anomalies using reduction densities of 2670 and 2200 kilogram/cubic meter. This region is at the...
By
Geology, Energy, and Minerals Mission Area, Geology, Minerals, Energy, and Geophysics Science Center

Gravity data and basin thickness grids for "Geophysical evidence for wedging in the San Gorgonio Pass structural knot, southern San Andreas fault zone, southern California" Gravity data and basin thickness grids for "Geophysical evidence for wedging in the San Gorgonio Pass structural knot, southern San Andreas fault zone, southern California"

This data release contains (1) principal facts of gravity measurements collected by the U.S. Geological Survey in 2000-2004 (usgs_iso.csv) and (2) inputs to a gravity inversion of Cenozoic basin thickness based on those gravity and previous measurements. Gridded data (geotiffs.zip) consist of the input isostatic gravity grid as well as grids of Cenozoic basin thickness and basement...
By
Geology, Minerals, Energy, and Geophysics Science Center

Gravity data, geophysical grids, and horizontal gradient maxima of the Healdsburg 30 by 60 minute quadrangle, California Gravity data, geophysical grids, and horizontal gradient maxima of the Healdsburg 30 by 60 minute quadrangle, California

This data release contains (1) principal facts of gravity measurements by previous studies and collected by the U.S. Geological Survey in 2006-2024, (2) geophysical grids, and (3) horizontal gradient maxima derived from gravity and magnetic potential fields of the Healdsburg 30 by 60 minute quadrangle, California. Gridded data are provided in geotiff format. These data support modeling...
By
Geology, Minerals, Energy, and Geophysics Science Center

Gravity and physical property data of the 2019 Ridgecrest earthquakes region, Mojave Desert, California Gravity and physical property data of the 2019 Ridgecrest earthquakes region, Mojave Desert, California

This data release presents point data associated with studies to understand the crustal structure of the 2019 Ridgecrest earthquakes epicentral region and the interaction of the northeast-to-east-striking Garlock fault with the northwest-striking faults of the Eastern California Shear Zone and Walker Lane. Data include principal fact information for new gravity measurements collected by...
By
Natural Hazards Mission Area, National Cooperative Geologic Mapping Program, Geology, Minerals, Energy, and Geophysics Science Center

Preliminary Digital Database for the Portola 30' x 60' Geologic and Geophysical Map, California Preliminary Digital Database for the Portola 30' x 60' Geologic and Geophysical Map, California

This geospatial dataset compiles, in digital form, geologic and geophysical data for the Portola 30’x 60’ quadrangle, located in the northern Sierra Nevada, California. This geologic map of the Portola 30’x 60’ quadrangle integrates decades of published and unpublished mapping in the northern Sierra Nevada. In conjunction with geophysical data, including more than 1000 new gravity...
By
National Cooperative Geologic Mapping Program

Gravity and physical property data of the Blythe region, California and Arizona Gravity and physical property data of the Blythe region, California and Arizona

This data release presents point data associated with studies to understand the crustal structure of the Blythe region, where strands of the pre-Quaternary Eastern California Shear zone project across this region in California and Arizona. Data include principal fact information for new gravity measurements collected by the U.S. Geological Survey from 2020 to 2025, previously unpublished...
By
National Cooperative Geologic Mapping Program, Geology, Minerals, Energy, and Geophysics Science Center

Tabular uranium-lead and trace-element compositional data of zircons and whole-rock geochemistry of plutonic rocks in the Sierra Nevada, California Tabular uranium-lead and trace-element compositional data of zircons and whole-rock geochemistry of plutonic rocks in the Sierra Nevada, California

This dataset consists of zircon uranium-lead (U-Pb) isotopic compositions, ages, and trace-element compositions in addition to whole-rock chemical compositions from plutons within the Sierra Nevada, California. These samples primarily collected from 2015 to 2023, although some legacy data are included. Zircon crystals were analyzed using the Sensitive High-Resolution Ion Micro-Probe...
By
Geology, Minerals, Energy, and Geophysics Science Center

P- and S-Wave Suspension Velocity Logs in the San Francisco Bay Region, Alameda, Santa Clara, and Sonoma Counties, California P- and S-Wave Suspension Velocity Logs in the San Francisco Bay Region, Alameda, Santa Clara, and Sonoma Counties, California

This data release contains P- and S-wave velocity data from logs of nine wells in three large sedimentary basins in the San Francisco Bay region. The logs were collected between 2000 and 2006 for the U.S. Geological Survey under contract by R.A. Steller of GeoVision using an Oyo suspension logging system. Well depths range from 215 to 407 meters and sample spacing in the wells ranges...
By
Geology, Minerals, Energy, and Geophysics Science Center

Digitized sonic velocity and density log data of the Eel River area, northern California Digitized sonic velocity and density log data of the Eel River area, northern California

Sonic velocity and density well logs in the Eel River area in northern California (Ferndale north Arcata) were digitized by hand. These logs are available as scanned files (pdfs and tiffs) on the California Division of Oil, Gas, and Geothermal Resources website (https://maps.conservation.ca.gov/doggr/wellfinder/). The data consist of transit times and bulk density measured downhole in...
By
Geology, Minerals, Energy, and Geophysics Science Center

Geophysical data and grids of the Grouse Creek and Utah part of the Jackpot 30' x 60' quadrangles, Utah Geophysical data and grids of the Grouse Creek and Utah part of the Jackpot 30' x 60' quadrangles, Utah

New geophysical data, including density and magnetic susceptibility measurements, were collected in the Grouse Creek and Utah part of the Jackpot 30' x 60' quadrangles in Box Elder County, Utah and Cassia County, Idaho. The release contains 324 new gravity measurements merged with a 2013 compilation. These data were inverted for basin thickness and basement density variations. The...
By
Geology, Minerals, Energy, and Geophysics Science Center
No results found.
Filter Total Items: 191

Width and dip of the southern San Andreas Fault at Salt Creek from modeling of geophysical data Width and dip of the southern San Andreas Fault at Salt Creek from modeling of geophysical data

We investigate the geometry and width of the southernmost stretch of the San Andreas Fault zone using new gravity and magnetic data along line 7 of the Salton Seismic Imaging Project. In the Salt Creek area of Durmid Hill, the San Andreas Fault coincides with a complex magnetic signature, with high-amplitude, short-wavelength magnetic anomalies superposed on a broader magnetic anomaly...
Authors
Victoria E. Langenheim, Noah D. Athens, Daniel S. Scheirer, Gary S. Fuis, Michael J. Rymer, Mark R. Goldman
By
Geology, Energy, and Minerals Mission Area, Energy Resources Program, Mineral Resources Program, Science and Decisions Center, Geology, Minerals, Energy, and Geophysics Science Center

Geophysical framework of the Peninsular Ranges batholith—Implications for tectonic evolution and neotectonics Geophysical framework of the Peninsular Ranges batholith—Implications for tectonic evolution and neotectonics

The crustal structure of the Peninsular Ranges batholith can be divided geophysically into two parts: (1) a western mafic part that is dense, magnetic, and characterized by relatively high seismic velocities (>6.25 km/s), low heat flow (
Authors
Victoria E. Langenheim, Robert C. Jachens, Carlos Aiken
By
Geology, Energy, and Minerals Mission Area, Energy Resources Program, Mineral Resources Program, Science and Decisions Center, Groundwater and Streamflow Information Program, Geology, Minerals, Energy, and Geophysics Science Center

Previously unrecognized regional structure of the Coastal Belt of the Franciscan Complex, northern California, revealed by magnetic data Previously unrecognized regional structure of the Coastal Belt of the Franciscan Complex, northern California, revealed by magnetic data

Magnetic anomalies provide surprising structural detail within the previously undivided Coastal Belt, the westernmost, youngest, and least-metamorphosed part of the Franciscan Complex of northern California. Although the Coastal Belt consists almost entirely of arkosic graywacke and shale of mainly Eocene age, new detailed aeromagnetic data show that it is pervasively marked by long...
Authors
Victoria E. Langenheim, Robert C. Jachens, Carl M. Wentworth, Robert J. McLaughlin
By
Geology, Energy, and Minerals Mission Area, Energy Resources Program, Mineral Resources Program, Science and Decisions Center, Groundwater and Streamflow Information Program, Geology, Minerals, Energy, and Geophysics Science Center

Digital tabulation of stratigraphic data from oil and gas wells in Cuyama Valley and surrounding areas, central California Digital tabulation of stratigraphic data from oil and gas wells in Cuyama Valley and surrounding areas, central California

Stratigraphic information from 391 oil and gas exploration wells from Cuyama Valley, California, and surrounding areas are herein compiled in digital form from reports that were released originally in paper form. The Cuyama Basin is located within the southeasternmost part of the Coast Ranges and north of the western Transverse Ranges, west of the San Andreas fault. Knowledge of the...
Authors
Donald S. Sweetkind, Shiera C. Bova, Victoria E. Langenheim, Lauren E. Shumaker, Daniel S. Scheirer
By
Geology, Geophysics, and Geochemistry Science Center

Preliminary isostatic gravity map of the Grouse Creek and east part of the Jackpot 30 by 60 quadrangles, Box Elder County, Utah, and Cassia County, Idaho Preliminary isostatic gravity map of the Grouse Creek and east part of the Jackpot 30 by 60 quadrangles, Box Elder County, Utah, and Cassia County, Idaho

A new isostatic residual gravity map of the northwest corner of Utah is based on compilation of preexisting data and new data collected by the Utah and United States Geological Surveys. Pronounced gravity lows occur over Junction, Grouse Creek, and upper Raft River Valleys, indicating significant thickness of low-density Tertiary sedimentary rocks and deposits. Gravity highs coincide...
Authors
Victoria E. Langenheim, H. Willis, N. D. Athens, Bruce A. Chuchel, J. Roza, H.I. Hiscock, C.L. Hardwick, S.M. Kraushaar, N.E. Knepprath, Jose J. Rosario
By
Geology, Energy, and Minerals Mission Area, Energy Resources Program, Mineral Resources Program, Science and Decisions Center, Geology, Minerals, Energy, and Geophysics Science Center

U.S. Geological Survey water science strategy—Observing, understanding, predicting, and delivering water science to the Nation U.S. Geological Survey water science strategy—Observing, understanding, predicting, and delivering water science to the Nation

Authors
Eric J. Evenson, Randall C. Orndorff, Charles D. Blome, John Karl Böhlke, Paul K. Hershberger, Victoria E. Langenheim, Gregory J. McCabe, Scott E. Morlock, Howard W. Reeves, James P. Verdin, Holly S. Weyers, Tamara M. Wood
By
Water Resources Mission Area, Earth Resources Observation and Science (EROS) Center, Geosciences and Environmental Change Science Center

Preliminary isostatic residual gravity map of the Newfoundland Mountains 30' by 60' quadrangle and east part of the Wells 30' by 60' quadrangle, Box Elder County, Utah Preliminary isostatic residual gravity map of the Newfoundland Mountains 30' by 60' quadrangle and east part of the Wells 30' by 60' quadrangle, Box Elder County, Utah

A new isostatic residual gravity map of the Newfoundland Mountains and east of the Wells 30×60 quadrangles of Utah is based on compilation of preexisting data and new data collected by the Utah and U.S. Geological Surveys. Pronounced gravity lows occur over Grouse Creek Valley and locally beneath the Great Salt Lake Desert, indicating significant thickness of low-density Tertiary...
Authors
Victoria E. Langenheim, N. D. Athens, B. A. Churchel, H. Willis, N.E. Knepprath, Jose J. Rosario, J. Roza, S.M. Kraushaar, C.L. Hardwick
By
Geology, Energy, and Minerals Mission Area, Energy Resources Program, Mineral Resources Program, Science and Decisions Center, Geology, Minerals, Energy, and Geophysics Science Center

Basin thickness variations at the Junction of the Eastern California Shear Zone and the San Bernardino Mountains, California: How thick could the Pliocene sections be? Basin thickness variations at the Junction of the Eastern California Shear Zone and the San Bernardino Mountains, California: How thick could the Pliocene sections be?

We estimate the thickness of Neogene basin fill along the junction of the Eastern California Shear Zone and the North Frontal thrust system of the San Bernardino Mountains using gravity data with geologic and well log constraints. The geometry of the basin fill is of interest for groundwater assessment and location of potential faults, as well as providing an upper bound on the thickness...
Authors
Victoria E. Langenheim, Tammy L. Surko, Phillip A. Armstrong, Jonathan C. Matti
By
Geology, Energy, and Minerals Mission Area, Energy Resources Program, Mineral Resources Program, Science and Decisions Center, Geology, Minerals, Energy, and Geophysics Science Center

Fault geometry and cumulative offsets in the central Coast Ranges, California: Evidence for northward increasing slip along the San Gregorio-San Simeon-Hosgri fault Fault geometry and cumulative offsets in the central Coast Ranges, California: Evidence for northward increasing slip along the San Gregorio-San Simeon-Hosgri fault

Estimates of the dip, depth extent, and amount of cumulative displacement along the major faults in the central California Coast Ranges are controversial. We use detailed aeromagnetic data to estimate these parameters for the San Gregorio–San Simeon–Hosgri and other faults. The recently acquired aeromagnetic data provide an areally consistent data set that crosses the onshore-offshore...
Authors
V.E. Langenheim, R.C. Jachens, R. W. Graymer, J.P. Colgan, C. M. Wentworth, R. G. Stanley

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

A magnetic map of the Irish Hills and surrounding areas was created as part of a cooperative research and development agreement with the Pacific Gas and Electric Company and is intended to promote further understanding of the areal geology and structure by serving as a basis for geophysical interpretations and by supporting geological mapping, mineral and water resource investigations...
Authors
V.E. Langenheim, J. T. Watt, K.M. Denton
By
Pacific Coastal and Marine Science Center, Geology, Minerals, Energy, and Geophysics Science Center

Strategic directions for U.S. Geological Survey water science, 2012-2022 - Observing, understanding, predicting, and delivering water science to the Nation Strategic directions for U.S. Geological Survey water science, 2012-2022 - Observing, understanding, predicting, and delivering water science to the Nation

Authors
Eric J. Evenson, Randall C. Orndorff, Charles D. Blome, John Karl Böhlke, Paul K. Hershberger, Victoria E. Langenheim, Gregory J. McCabe, Scott E. Morlock, Howard W. Reeves, James P. Verdin, Holly S. Weyers, Tamara M. Wood
By
Ecosystems Mission Area, Earth Resources Observation and Science (EROS) Center, Western Fisheries Research Center, Marrowstone Marine Field Station (MMFS)

Integrated geophysical surveys for mapping lati-andesite intrusive bodies, Chino Valley, Arizona Integrated geophysical surveys for mapping lati-andesite intrusive bodies, Chino Valley, Arizona

Three different geophysical methods (magnetic, transient electromagnetic (TEM) and gravity) were used near Chino Valley, Arizona, USA in order to map a suspected lati-andesite intrusive body (plug) previously located by interpretation of aeromagnetic data. The magnetic and TEM surveys provided the best indication of the location and depth of the plug. The north-south spatial extent of...
Authors
Hesham El-Kaliouby, Ben K. Sternberg, John P. Hoffmann, V.E. Langenheim

Science and Products

San Andreas Fault in the Carrizo Plain

San Andreas Fault System in Southern California

Southern California is home to nearly 24 million people and countless visitors who live, recreate, consume resources, and face the risk of natural hazards in the region. This project produces high-quality, multi-purpose geologic maps, databases, and reports that portray our understanding of the region’s four-dimensional geologic framework. We conduct stratigraphic, structural, geomorphological...
By
Core Science Systems Mission Area, Geology, Minerals, Energy, and Geophysics Science Center
San Andreas Fault System in Southern California

San Andreas Fault System in Southern California

Southern California is home to nearly 24 million people and countless visitors who live, recreate, consume resources, and face the risk of natural hazards in the region. This project produces high-quality, multi-purpose geologic maps, databases, and reports that portray our understanding of the region’s four-dimensional geologic framework. We conduct stratigraphic, structural, geomorphological...
Learn More
3-D Geologic Map

2D and 3D Geologic Mapping and Earthquake Hazards of California

This project uses geologic and geophysical mapping to build an earth-science framework for scientific investigations that include assessments of critical resources, such as groundwater, and of hazards, such as those resulting from earthquakes, in California west of and including the Sierra Nevada and Cascade arc. Questions of particular interest include: What are the geometries, slip rates, and...
By
National Cooperative Geologic Mapping Program, California Water Science Center, Geology, Minerals, Energy, and Geophysics Science Center
2D and 3D Geologic Mapping and Earthquake Hazards of California

2D and 3D Geologic Mapping and Earthquake Hazards of California

This project uses geologic and geophysical mapping to build an earth-science framework for scientific investigations that include assessments of critical resources, such as groundwater, and of hazards, such as those resulting from earthquakes, in California west of and including the Sierra Nevada and Cascade arc. Questions of particular interest include: What are the geometries, slip rates, and...
Learn More
Filter Total Items: 36

Seismic-reflection profiles in Chuckwalla Valley, southeastern California Seismic-reflection profiles in Chuckwalla Valley, southeastern California

Two industry seismic-reflection profiles in Chuckwalla Valley (southeastern California) were donated by Buckhorn Petroleum to the CALCRUST program in ~1987. USGS personnel Jeff Wilson, Eric Geist, and Jill McCarthy reprocessed the seismic reflection data, concentrating on imaging reflections below the Cenozoic basin fill using pre-stack techniques. This data release describes the...
By
Geology, Minerals, Energy, and Geophysics Science Center

Geophysical grids, horizontal gradient maxima and depth to bedrock of the Blythe region, California and Arizona Geophysical grids, horizontal gradient maxima and depth to bedrock of the Blythe region, California and Arizona

This data release contains (1) geophysical grids, (2) horizontal gravity and residual magnetic gradient maxima and (3) inputs to a gravity inversion of Cenozoic basin thickness based on gravity measurements of the Blythe region of California and Arizona. Gridded data (geotiffs.zip) consist of the input isostatic gravity grid as well as grids of Cenozoic basin thickness and bedrock...
By
Geology, Minerals, Energy, and Geophysics Science Center

Gravity and physical property data of northeastern California (ver. 2.0, December 2025) Gravity and physical property data of northeastern California (ver. 2.0, December 2025)

This data release contains principal facts of gravity measurements by previous studies and collected by the U.S. Geological Survey in 1994-2023 and a compilation of existing and new density and magnetic susceptibility data in northeastern California. Gravity data are processed to isostatic anomalies using reduction densities of 2670 and 2200 kilogram/cubic meter. This region is at the...
By
Geology, Energy, and Minerals Mission Area, Geology, Minerals, Energy, and Geophysics Science Center

Gravity data and basin thickness grids for "Geophysical evidence for wedging in the San Gorgonio Pass structural knot, southern San Andreas fault zone, southern California" Gravity data and basin thickness grids for "Geophysical evidence for wedging in the San Gorgonio Pass structural knot, southern San Andreas fault zone, southern California"

This data release contains (1) principal facts of gravity measurements collected by the U.S. Geological Survey in 2000-2004 (usgs_iso.csv) and (2) inputs to a gravity inversion of Cenozoic basin thickness based on those gravity and previous measurements. Gridded data (geotiffs.zip) consist of the input isostatic gravity grid as well as grids of Cenozoic basin thickness and basement...
By
Geology, Minerals, Energy, and Geophysics Science Center

Gravity data, geophysical grids, and horizontal gradient maxima of the Healdsburg 30 by 60 minute quadrangle, California Gravity data, geophysical grids, and horizontal gradient maxima of the Healdsburg 30 by 60 minute quadrangle, California

This data release contains (1) principal facts of gravity measurements by previous studies and collected by the U.S. Geological Survey in 2006-2024, (2) geophysical grids, and (3) horizontal gradient maxima derived from gravity and magnetic potential fields of the Healdsburg 30 by 60 minute quadrangle, California. Gridded data are provided in geotiff format. These data support modeling...
By
Geology, Minerals, Energy, and Geophysics Science Center

Gravity and physical property data of the 2019 Ridgecrest earthquakes region, Mojave Desert, California Gravity and physical property data of the 2019 Ridgecrest earthquakes region, Mojave Desert, California

This data release presents point data associated with studies to understand the crustal structure of the 2019 Ridgecrest earthquakes epicentral region and the interaction of the northeast-to-east-striking Garlock fault with the northwest-striking faults of the Eastern California Shear Zone and Walker Lane. Data include principal fact information for new gravity measurements collected by...
By
Natural Hazards Mission Area, National Cooperative Geologic Mapping Program, Geology, Minerals, Energy, and Geophysics Science Center

Preliminary Digital Database for the Portola 30' x 60' Geologic and Geophysical Map, California Preliminary Digital Database for the Portola 30' x 60' Geologic and Geophysical Map, California

This geospatial dataset compiles, in digital form, geologic and geophysical data for the Portola 30’x 60’ quadrangle, located in the northern Sierra Nevada, California. This geologic map of the Portola 30’x 60’ quadrangle integrates decades of published and unpublished mapping in the northern Sierra Nevada. In conjunction with geophysical data, including more than 1000 new gravity...
By
National Cooperative Geologic Mapping Program

Gravity and physical property data of the Blythe region, California and Arizona Gravity and physical property data of the Blythe region, California and Arizona

This data release presents point data associated with studies to understand the crustal structure of the Blythe region, where strands of the pre-Quaternary Eastern California Shear zone project across this region in California and Arizona. Data include principal fact information for new gravity measurements collected by the U.S. Geological Survey from 2020 to 2025, previously unpublished...
By
National Cooperative Geologic Mapping Program, Geology, Minerals, Energy, and Geophysics Science Center

Tabular uranium-lead and trace-element compositional data of zircons and whole-rock geochemistry of plutonic rocks in the Sierra Nevada, California Tabular uranium-lead and trace-element compositional data of zircons and whole-rock geochemistry of plutonic rocks in the Sierra Nevada, California

This dataset consists of zircon uranium-lead (U-Pb) isotopic compositions, ages, and trace-element compositions in addition to whole-rock chemical compositions from plutons within the Sierra Nevada, California. These samples primarily collected from 2015 to 2023, although some legacy data are included. Zircon crystals were analyzed using the Sensitive High-Resolution Ion Micro-Probe...
By
Geology, Minerals, Energy, and Geophysics Science Center

P- and S-Wave Suspension Velocity Logs in the San Francisco Bay Region, Alameda, Santa Clara, and Sonoma Counties, California P- and S-Wave Suspension Velocity Logs in the San Francisco Bay Region, Alameda, Santa Clara, and Sonoma Counties, California

This data release contains P- and S-wave velocity data from logs of nine wells in three large sedimentary basins in the San Francisco Bay region. The logs were collected between 2000 and 2006 for the U.S. Geological Survey under contract by R.A. Steller of GeoVision using an Oyo suspension logging system. Well depths range from 215 to 407 meters and sample spacing in the wells ranges...
By
Geology, Minerals, Energy, and Geophysics Science Center

Digitized sonic velocity and density log data of the Eel River area, northern California Digitized sonic velocity and density log data of the Eel River area, northern California

Sonic velocity and density well logs in the Eel River area in northern California (Ferndale north Arcata) were digitized by hand. These logs are available as scanned files (pdfs and tiffs) on the California Division of Oil, Gas, and Geothermal Resources website (https://maps.conservation.ca.gov/doggr/wellfinder/). The data consist of transit times and bulk density measured downhole in...
By
Geology, Minerals, Energy, and Geophysics Science Center

Geophysical data and grids of the Grouse Creek and Utah part of the Jackpot 30' x 60' quadrangles, Utah Geophysical data and grids of the Grouse Creek and Utah part of the Jackpot 30' x 60' quadrangles, Utah

New geophysical data, including density and magnetic susceptibility measurements, were collected in the Grouse Creek and Utah part of the Jackpot 30' x 60' quadrangles in Box Elder County, Utah and Cassia County, Idaho. The release contains 324 new gravity measurements merged with a 2013 compilation. These data were inverted for basin thickness and basement density variations. The...
By
Geology, Minerals, Energy, and Geophysics Science Center
No results found.
Filter Total Items: 191

Width and dip of the southern San Andreas Fault at Salt Creek from modeling of geophysical data Width and dip of the southern San Andreas Fault at Salt Creek from modeling of geophysical data

We investigate the geometry and width of the southernmost stretch of the San Andreas Fault zone using new gravity and magnetic data along line 7 of the Salton Seismic Imaging Project. In the Salt Creek area of Durmid Hill, the San Andreas Fault coincides with a complex magnetic signature, with high-amplitude, short-wavelength magnetic anomalies superposed on a broader magnetic anomaly...
Authors
Victoria E. Langenheim, Noah D. Athens, Daniel S. Scheirer, Gary S. Fuis, Michael J. Rymer, Mark R. Goldman
By
Geology, Energy, and Minerals Mission Area, Energy Resources Program, Mineral Resources Program, Science and Decisions Center, Geology, Minerals, Energy, and Geophysics Science Center

Geophysical framework of the Peninsular Ranges batholith—Implications for tectonic evolution and neotectonics Geophysical framework of the Peninsular Ranges batholith—Implications for tectonic evolution and neotectonics

The crustal structure of the Peninsular Ranges batholith can be divided geophysically into two parts: (1) a western mafic part that is dense, magnetic, and characterized by relatively high seismic velocities (>6.25 km/s), low heat flow (
Authors
Victoria E. Langenheim, Robert C. Jachens, Carlos Aiken
By
Geology, Energy, and Minerals Mission Area, Energy Resources Program, Mineral Resources Program, Science and Decisions Center, Groundwater and Streamflow Information Program, Geology, Minerals, Energy, and Geophysics Science Center

Previously unrecognized regional structure of the Coastal Belt of the Franciscan Complex, northern California, revealed by magnetic data Previously unrecognized regional structure of the Coastal Belt of the Franciscan Complex, northern California, revealed by magnetic data

Magnetic anomalies provide surprising structural detail within the previously undivided Coastal Belt, the westernmost, youngest, and least-metamorphosed part of the Franciscan Complex of northern California. Although the Coastal Belt consists almost entirely of arkosic graywacke and shale of mainly Eocene age, new detailed aeromagnetic data show that it is pervasively marked by long...
Authors
Victoria E. Langenheim, Robert C. Jachens, Carl M. Wentworth, Robert J. McLaughlin
By
Geology, Energy, and Minerals Mission Area, Energy Resources Program, Mineral Resources Program, Science and Decisions Center, Groundwater and Streamflow Information Program, Geology, Minerals, Energy, and Geophysics Science Center

Digital tabulation of stratigraphic data from oil and gas wells in Cuyama Valley and surrounding areas, central California Digital tabulation of stratigraphic data from oil and gas wells in Cuyama Valley and surrounding areas, central California

Stratigraphic information from 391 oil and gas exploration wells from Cuyama Valley, California, and surrounding areas are herein compiled in digital form from reports that were released originally in paper form. The Cuyama Basin is located within the southeasternmost part of the Coast Ranges and north of the western Transverse Ranges, west of the San Andreas fault. Knowledge of the...
Authors
Donald S. Sweetkind, Shiera C. Bova, Victoria E. Langenheim, Lauren E. Shumaker, Daniel S. Scheirer
By
Geology, Geophysics, and Geochemistry Science Center

Preliminary isostatic gravity map of the Grouse Creek and east part of the Jackpot 30 by 60 quadrangles, Box Elder County, Utah, and Cassia County, Idaho Preliminary isostatic gravity map of the Grouse Creek and east part of the Jackpot 30 by 60 quadrangles, Box Elder County, Utah, and Cassia County, Idaho

A new isostatic residual gravity map of the northwest corner of Utah is based on compilation of preexisting data and new data collected by the Utah and United States Geological Surveys. Pronounced gravity lows occur over Junction, Grouse Creek, and upper Raft River Valleys, indicating significant thickness of low-density Tertiary sedimentary rocks and deposits. Gravity highs coincide...
Authors
Victoria E. Langenheim, H. Willis, N. D. Athens, Bruce A. Chuchel, J. Roza, H.I. Hiscock, C.L. Hardwick, S.M. Kraushaar, N.E. Knepprath, Jose J. Rosario
By
Geology, Energy, and Minerals Mission Area, Energy Resources Program, Mineral Resources Program, Science and Decisions Center, Geology, Minerals, Energy, and Geophysics Science Center

U.S. Geological Survey water science strategy—Observing, understanding, predicting, and delivering water science to the Nation U.S. Geological Survey water science strategy—Observing, understanding, predicting, and delivering water science to the Nation

Authors
Eric J. Evenson, Randall C. Orndorff, Charles D. Blome, John Karl Böhlke, Paul K. Hershberger, Victoria E. Langenheim, Gregory J. McCabe, Scott E. Morlock, Howard W. Reeves, James P. Verdin, Holly S. Weyers, Tamara M. Wood
By
Water Resources Mission Area, Earth Resources Observation and Science (EROS) Center, Geosciences and Environmental Change Science Center

Preliminary isostatic residual gravity map of the Newfoundland Mountains 30' by 60' quadrangle and east part of the Wells 30' by 60' quadrangle, Box Elder County, Utah Preliminary isostatic residual gravity map of the Newfoundland Mountains 30' by 60' quadrangle and east part of the Wells 30' by 60' quadrangle, Box Elder County, Utah

A new isostatic residual gravity map of the Newfoundland Mountains and east of the Wells 30×60 quadrangles of Utah is based on compilation of preexisting data and new data collected by the Utah and U.S. Geological Surveys. Pronounced gravity lows occur over Grouse Creek Valley and locally beneath the Great Salt Lake Desert, indicating significant thickness of low-density Tertiary...
Authors
Victoria E. Langenheim, N. D. Athens, B. A. Churchel, H. Willis, N.E. Knepprath, Jose J. Rosario, J. Roza, S.M. Kraushaar, C.L. Hardwick
By
Geology, Energy, and Minerals Mission Area, Energy Resources Program, Mineral Resources Program, Science and Decisions Center, Geology, Minerals, Energy, and Geophysics Science Center

Basin thickness variations at the Junction of the Eastern California Shear Zone and the San Bernardino Mountains, California: How thick could the Pliocene sections be? Basin thickness variations at the Junction of the Eastern California Shear Zone and the San Bernardino Mountains, California: How thick could the Pliocene sections be?

We estimate the thickness of Neogene basin fill along the junction of the Eastern California Shear Zone and the North Frontal thrust system of the San Bernardino Mountains using gravity data with geologic and well log constraints. The geometry of the basin fill is of interest for groundwater assessment and location of potential faults, as well as providing an upper bound on the thickness...
Authors
Victoria E. Langenheim, Tammy L. Surko, Phillip A. Armstrong, Jonathan C. Matti
By
Geology, Energy, and Minerals Mission Area, Energy Resources Program, Mineral Resources Program, Science and Decisions Center, Geology, Minerals, Energy, and Geophysics Science Center

Fault geometry and cumulative offsets in the central Coast Ranges, California: Evidence for northward increasing slip along the San Gregorio-San Simeon-Hosgri fault Fault geometry and cumulative offsets in the central Coast Ranges, California: Evidence for northward increasing slip along the San Gregorio-San Simeon-Hosgri fault

Estimates of the dip, depth extent, and amount of cumulative displacement along the major faults in the central California Coast Ranges are controversial. We use detailed aeromagnetic data to estimate these parameters for the San Gregorio–San Simeon–Hosgri and other faults. The recently acquired aeromagnetic data provide an areally consistent data set that crosses the onshore-offshore...
Authors
V.E. Langenheim, R.C. Jachens, R. W. Graymer, J.P. Colgan, C. M. Wentworth, R. G. Stanley

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

A magnetic map of the Irish Hills and surrounding areas was created as part of a cooperative research and development agreement with the Pacific Gas and Electric Company and is intended to promote further understanding of the areal geology and structure by serving as a basis for geophysical interpretations and by supporting geological mapping, mineral and water resource investigations...
Authors
V.E. Langenheim, J. T. Watt, K.M. Denton
By
Pacific Coastal and Marine Science Center, Geology, Minerals, Energy, and Geophysics Science Center

Strategic directions for U.S. Geological Survey water science, 2012-2022 - Observing, understanding, predicting, and delivering water science to the Nation Strategic directions for U.S. Geological Survey water science, 2012-2022 - Observing, understanding, predicting, and delivering water science to the Nation

Authors
Eric J. Evenson, Randall C. Orndorff, Charles D. Blome, John Karl Böhlke, Paul K. Hershberger, Victoria E. Langenheim, Gregory J. McCabe, Scott E. Morlock, Howard W. Reeves, James P. Verdin, Holly S. Weyers, Tamara M. Wood
By
Ecosystems Mission Area, Earth Resources Observation and Science (EROS) Center, Western Fisheries Research Center, Marrowstone Marine Field Station (MMFS)

Integrated geophysical surveys for mapping lati-andesite intrusive bodies, Chino Valley, Arizona Integrated geophysical surveys for mapping lati-andesite intrusive bodies, Chino Valley, Arizona

Three different geophysical methods (magnetic, transient electromagnetic (TEM) and gravity) were used near Chino Valley, Arizona, USA in order to map a suspected lati-andesite intrusive body (plug) previously located by interpretation of aeromagnetic data. The magnetic and TEM surveys provided the best indication of the location and depth of the plug. The north-south spatial extent of...
Authors
Hesham El-Kaliouby, Ben K. Sternberg, John P. Hoffmann, V.E. Langenheim
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