Victoria Langenheim

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May 18, 2021

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...

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Core Science Systems Mission Area, Geology, Minerals, Energy, and Geophysics Science Center

San Andreas Fault System in Southern California

May 18, 2021

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...

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December 10, 2018

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...

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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

December 10, 2018

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...

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Filter Total Items: 36

Data Type

Type Data Release Real-time Data

Release Date (field_release_date)

Year 2026 2025 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996 1995 1994 1993 1992 1991 1990 1989 1988 1987 1986 1985 1984 1983 1982 1981 1980 1979 1978 1977 1976 1975 1974 1973 1972 1971 1970 1969 1968 1967 1966 1965 1964 1963 1962 1961 1960 1959 1958 1957 1956 1955 1954 1953 1952 1951 1950 1949 1948 1947 1946 1945 1944 1943 1942 1941 1940 1939 1938 1937 1936 1935 1934 1933 1932 1931 1930 1929 1928 1927 1926 1925 1924 1923 1922 1921 1920 1919 1918 1917 1916 1915 1914 1913 1912 1911 1910 1909 1908 1907 1906 1905 1904 1903 1902 1901 1900 1899 1898 1897 1896 1895 1894 1893 1892 1891 1890 1889 1888 1887 1886 1885 1884 1883 1882 1881 1880 1879 1878 1877 1876 1875 1874 1873 1872 1871 1870 1869 1868 1867 1866 1865 1864 1863 1862 1861 1860 1859 1858 1857 1856 1855 1854 1853 1852 1851 1850 1849 1848 1847 1846 1845 1844 1843 1842 1841 1840 1839 1838 1837 1836 1835 1834 1833 1832 1831 1830 1829 1828 1827 1826 1825 1824 1823 1822 1821 1820 1819 1818 1817 1816 1815 1814 1813 1812 1811

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August 18, 2026

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...

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Geology, Minerals, Energy, and Geophysics Science Center

April 15, 2026

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...

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Geology, Minerals, Energy, and Geophysics Science Center

December 7, 2025

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...

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Geology, Energy, and Minerals Mission Area, Geology, Minerals, Energy, and Geophysics Science Center

November 18, 2025

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...

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Geology, Minerals, Energy, and Geophysics Science Center

September 24, 2025

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...

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Geology, Minerals, Energy, and Geophysics Science Center

July 10, 2025

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...

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Natural Hazards Mission Area, National Cooperative Geologic Mapping Program, Geology, Minerals, Energy, and Geophysics Science Center

June 13, 2025

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...

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National Cooperative Geologic Mapping Program

May 16, 2025

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...

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National Cooperative Geologic Mapping Program, Geology, Minerals, Energy, and Geophysics Science Center

April 23, 2025

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...

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Geology, Minerals, Energy, and Geophysics Science Center

April 22, 2025

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...

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Geology, Minerals, Energy, and Geophysics Science Center

March 6, 2025

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...

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Geology, Minerals, Energy, and Geophysics Science Center

January 19, 2025

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...

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Geology, Minerals, Energy, and Geophysics Science Center

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Filter Total Items: 191

Publication Type (field_pub_type)

Type Article Book Book Chapter Conference Paper Extramural-Authored Publication Paper Newsletter Other Preprint Report Thesis

Release Date (field_release_date)

Year 2026 2025 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996 1995 1994 1993 1992 1991 1990 1989 1988 1987 1986 1985 1984 1983 1982 1981 1980 1979 1978 1977 1976 1975 1974 1973 1972 1971 1970 1969 1968 1967 1966 1965 1964 1963 1962 1961 1960 1959 1958 1957 1956 1955 1954 1953 1952 1951 1950 1949 1948 1947 1946 1945 1944 1943 1942 1941 1940 1939 1938 1937 1936 1935 1934 1933 1932 1931 1930 1929 1928 1927 1926 1925 1924 1923 1922 1921 1920 1919 1918 1917 1916 1915 1914 1913 1912 1911 1910 1909 1908 1907 1906 1905 1904 1903 1902 1901 1900 1899 1898 1897 1896 1895 1894 1893 1892 1891 1890 1889 1888 1887 1886 1885 1884 1883 1882 1881 1880 1879 1878 1877 1876 1875 1874 1873 1872 1871 1870 1869 1868 1867 1866 1865 1864 1863 1862 1861 1860 1859 1858 1857 1856 1855 1854 1853 1852 1851 1850 1849 1848 1847 1846 1845 1844 1843 1842 1841 1840 1839 1838 1837 1836 1835 1834 1833 1832 1831 1830 1829 1828 1827 1826 1825 1824 1823 1822 1821 1820 1819 1818 1817 1816 1815 1814 1813 1812 1811

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January 1, 1991

Complete Bouguer gravity anomaly and isostatic residual gravity maps of the Bakersfield 1° x 2° quadrangle, California Complete Bouguer gravity anomaly and isostatic residual gravity maps of the Bakersfield 1° x 2° quadrangle, California

No abstract available.

Authors

Victoria E. Langenheim, Jeffrey B. Plescia

January 1, 1991

Principal facts for gravity data compiled for the Bakersfield 1 by 2 degree sheet, California Principal facts for gravity data compiled for the Bakersfield 1 by 2 degree sheet, California

No abstract available.

Authors

Victoria E. Langenheim, Jeffrey B. Plescia

January 1, 1991

Principal facts for gravity data compiled for the Bakersfield 1 by 2 degree sheet, California Principal facts for gravity data compiled for the Bakersfield 1 by 2 degree sheet, California

No abstract available.

Authors

Victoria E. Langenheim, Jeffrey B. Plescia

January 1, 1991

Geophysical characterization of mineral and energy resources at Yucca Mountain and vicinity, Nevada Geophysical characterization of mineral and energy resources at Yucca Mountain and vicinity, Nevada

No abstract available.

Authors

Victoria E. Langenheim, Donald B. Hoover, Howard W. Oliver

January 1, 1991

Revision of an aeromagnetic survey of the Lathrop Wells area, Nevada Revision of an aeromagnetic survey of the Lathrop Wells area, Nevada

No abstract available.

Authors

Victoria E. Langenheim, S. F. Carle, D. A. Ponce, J.D. Philips

January 1, 1991

Bouguer gravity maps, rock property data, and principal facts for gravity data compiled for the island of Puerto Rico and vicinity Bouguer gravity maps, rock property data, and principal facts for gravity data compiled for the island of Puerto Rico and vicinity

No abstract available.

Authors

N. E. Kitchen, V.E. Langenheim, W. L. Rambo, Andrew Griscom

January 1, 1990

Isostatic gravity map and principal facts for 694 gravity stations in Yellowstone National Park and vicinity, Wyoming, Montana, and Idaho Isostatic gravity map and principal facts for 694 gravity stations in Yellowstone National Park and vicinity, Wyoming, Montana, and Idaho

The report presents the principal facts for gravity stations compiled for Yellowstone National Park and vicinity. The gravity data were compiled from three sources: Defense Mapping Agency, University of Utah, and U.S. Geological Survey. Part A of the report is a paper copy describing how the compilation was done and presenting the data in tabular format as well as a map; part B is a 5-1...

Authors

S. F. Carle, J. M. Glen, V.E. Langenheim, R. B. Smith, H. W. Oliver

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Yellowstone Volcano Observatory

January 1, 1990

Isostatic gravity map and principal facts for 694 gravity stations in Yellowstone National Park and vicinity, Wyoming, Montana, and Idaho Isostatic gravity map and principal facts for 694 gravity stations in Yellowstone National Park and vicinity, Wyoming, Montana, and Idaho

No abstract available.

Authors

S. F. Carle, J. M. Glen, V.E. Langenheim, R. B. Smith, H. W. Oliver

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Yellowstone Volcano Observatory

January 1, 1990

Principal facts for 398 gravity stations in the Palo Alto 7.5' quadrangle, California Principal facts for 398 gravity stations in the Palo Alto 7.5' quadrangle, California

No abstract available.

Authors

Steven F. Carle, Victoria E. Langenheim

January 1, 1990

Principal facts for 398 gravity stations in the Palo Alto 7.5' quadrangle, California Principal facts for 398 gravity stations in the Palo Alto 7.5' quadrangle, California

No abstract available.

Authors

Steven F. Carle, Victoria E. Langenheim

January 1, 1989

Principal facts, gravity profile, and interpreted geologic model for 128 gravity stations along a portion of a COCORP seismic profile on the Millett 1 by 2 degree Quadrangle, Nevada Principal facts, gravity profile, and interpreted geologic model for 128 gravity stations along a portion of a COCORP seismic profile on the Millett 1 by 2 degree Quadrangle, Nevada

No abstract available.

Authors

B. A. Chuchel, V.E. Langenheim, R. W. Saltus, D.B. Snyder, H. W. Oliver, C.M. Comfort

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