Daniel Scheirer
Dan is a Research Geophysicist with the Geology, Minerals, Energy, and Geophysics Science Center. He joined the USGS as a Research Geophysicist in 2002.
Dan has applied geophysical techniques to resource and hazard issues in the western U.S. and Pacific Ocean. He has served as both a supervisor and a manager.
Professional Experience
2002-2021, Research Geophysicist, GMEG Science Center.
Education and Certifications
PhD, U.C. Santa Barbara, 1994
B.S.E., Princeton University, 1987
Science and Products
Ground Magnetic Observations of the Mammoth Magnetic Anomaly, Pinal County, Arizona, May 2025 Ground Magnetic Observations of the Mammoth Magnetic Anomaly, Pinal County, Arizona, May 2025
This data release provides ground magnetic data collected in May 2025 at the Mammoth Magnetic Anomaly (MMA) site in Pinal County, Arizona. These data were collected to validate and characterize a large aeromagnetic anomaly observed in an airborne survey of southeastern Arizona (Scheirer et al., 2025). The geophysical fieldwork was funded by the Earth Mapping Resources Initiative. Ground...
Airborne magnetic and radiometric data acquired over parts of Cochise, Graham, Greenlee, Pima, Pinal, and Santa Cruz Counties, Arizona Airborne magnetic and radiometric data acquired over parts of Cochise, Graham, Greenlee, Pima, Pinal, and Santa Cruz Counties, Arizona
This data release provides digital flight line data for a high-resolution airborne magnetic and radiometric survey of the Arizona Porphyry Copper Belt in southeastern Arizona. The airborne survey was funded by the Earth Mapping Resources Initiative. NV5 Geospatial, in collaboration with EDCON-PRJ, Inc., acquired high-precision airborne magnetic and radiometric data from November 15, 2023...
Sediment Thickness Data in the Deep-Sea Basins of the Bering Sea Sediment Thickness Data in the Deep-Sea Basins of the Bering Sea
A raster grid of sediment thickness in GeoTIFF format (BeringSeaBasins-SedimentThicknessGrid.tif) of the Aleutian, Bowers, and Komandorsky Basins was created by merging GeoTIFF grids of the Aleutian and Bowers Basins and of the Komandorsky Basin, provided in other sections of this data release. The raster grid file, along with a corresponding CSDGM FGDC-compliant metadata file, is...
Marine Magnetic Anomalies of the Bering Sea and Pacific Ocean North of 35°N Marine Magnetic Anomalies of the Bering Sea and Pacific Ocean North of 35°N
The text file in CSV (comma-separated values) format contains marine magnetic data from 291 cruises in the Northern Pacific Ocean and Bering Sea. These data originate from two sources: 266 cruises from the National Oceanic and Atmospheric Administration (NOAA) National Centers for Environmental Information (NCEI) Marine Trackline Geophysical Database (GEODAS) -- https://www.ncei.noaa.gov...
Marine magnetic data from twelve cruises of Pioneer and Rehoboth in 1955 and 1956 off British Columbia, Washington, Oregon, and California Marine magnetic data from twelve cruises of Pioneer and Rehoboth in 1955 and 1956 off British Columbia, Washington, Oregon, and California
This shapefile contains total‐field marine magnetic data from eleven cruises of the USCGS ship Pioneer (OSS‐31) and one cruise from the USS Rehoboth (AGS‐50) in deep water off the west coast of the United States and southern British Columbia in 1955 and 1956. Magnetic anomalies are calculated with the latest definitive geomagnetic reference field (DGRF) included in the 12th Generation of...
gravmagsubs: Gravitational and magnetic attraction of 3-D vertical rectangular prisms gravmagsubs: Gravitational and magnetic attraction of 3-D vertical rectangular prisms
gravmagsubs is a software package for the R language that provides tools for forward modeling gravity and magnetic anomalies from 3-D right rectangular prisms. The gravity anomaly is defined as the vertical component of gravitational acceleration, while the magnetic anomaly includes the effects of both induced and remanent magnetization. The package can model the total anomaly from a...
Detrital zircon geochronology and geochemistry data from the seafloor of the Bering Sea and adjacent river systems Detrital zircon geochronology and geochemistry data from the seafloor of the Bering Sea and adjacent river systems
This dataset archives geochronology and geochemistry measurements from detrital zircons collected from samples taken from the Bering Sea and its major feeder rivers.
Airborne Geophysical Survey Inventory of the Conterminous United States, Alaska, Hawaii, and Puerto Rico (ver. 5.0, April 2024) Airborne Geophysical Survey Inventory of the Conterminous United States, Alaska, Hawaii, and Puerto Rico (ver. 5.0, April 2024)
This data release is a compilation of the locations of airborne geophysical surveys in the United States. The inventory documents public airborne geophysical surveys primarily flown by or contracted by the USGS from 1943 to present. In addition, surveys from the State of Alaska, Department of Natural Resources, Division of Geological and Geophysical Surveys (DGGS): Airborne GeophysWeb...
Filter Total Items: 22
The Mammoth magnetic anomaly, Pinal County, Arizona The Mammoth magnetic anomaly, Pinal County, Arizona
A high-resolution Earth Mapping Resources Initiative airborne geophysical survey was flown in the southwest North American porphyry copper province to improve bedrock geologic maps and to identify areas that have unrecognized critical mineral resource potential. During the review of the aeromagnetic data, a distinctly monopolar-shaped, negative magnetic anomaly was observed at a flight...
Authors
Callum Walter, Daniel Scheirer, Carl Joseph Beno, Jackson Borchardt, Dylan Mark Connell
Did the Aleutian Basin form by plate capture or backarc basin opening? Did the Aleutian Basin form by plate capture or backarc basin opening?
The origin of the Aleutian Basin is unresolved because its crust is deeply buried beneath sediments. It has been interpreted as forming in the Eocene when the Beringian convergent margin jumped seaward to south of the Aleutian arc, thereby capturing a large sector of Cretaceous Pacific crust. Alternatively, it may have formed by backarc spreading. We present new magnetic and seismic...
Authors
Robert Stern, David W. Scholl, Matthew A. Malkowski, Kylara M. Martin, Ginger Barth, Daniel Scheirer
Continental shelves as detrital mixers: U-Pb and Lu-Hf detrital zircon provenance of the Pleistocene–Holocene Bering Sea and its margins Continental shelves as detrital mixers: U-Pb and Lu-Hf detrital zircon provenance of the Pleistocene–Holocene Bering Sea and its margins
Continental shelves serve as critical transfer zones in sediment-routing systems, linking the terrestrial erosional and deep-water depositional domains. The degree to which clastic sediment is mixed and homogenized during transfer across broad shelves has important implications for understanding deep-sea detrital records. Wide continental shelves are thought to act as capacitors...
Authors
Matthew A. Malkowski, Samuel Johnstone, Glenn Sharman, Colin White, Daniel Scheirer, Ginger Barth
By
Coastal and Marine Hazards and Resources Program, National Cooperative Geologic Mapping Program, Geology, Minerals, Energy, and Geophysics Science Center, Geosciences and Environmental Change Science Center, Pacific Coastal and Marine Science Center, Deep Sea Exploration, Mapping and Characterization
Gravity surveys using a mobile atom interferometer Gravity surveys using a mobile atom interferometer
Mobile gravimetry is important in metrology, navigation, geodesy, and geophysics. Atomic gravimeters could be among the most accurate mobile gravimeters, but are currently constrained by being complex and fragile. Here, we demonstrate a mobile atomic gravimeter, measuring tidal gravity variations in the laboratory as well as surveying gravity in the field. The tidal gravity measurements...
Authors
Xuejian Wu, Zachary Pagel, Bola Malek, Timothy Nguyen, Fei Zi, Daniel Scheirer, Holger Muller
Three-dimensional basin and fault structure from a detailed seismic velocity model of Coachella Valley, Southern California Three-dimensional basin and fault structure from a detailed seismic velocity model of Coachella Valley, Southern California
The Coachella Valley in the northern Salton Trough is known to produce destructive earthquakes, making it a high seismic hazard area. Knowledge of the seismic velocity structure and geometry of the sedimentary basins and fault zones is required to improve earthquake hazard estimates in this region. We simultaneously inverted first P wave travel times from the Southern California Seismic...
Authors
Rasheed Ajala, Patricia Persaud, Joann Stock, Gary Fuis, John Hole, Mark Goldman, Daniel Scheirer
Reexamination of the subsurface fault structure in the vicinity of the 1989 moment-magnitude-6.9 Loma Prieta earthquake, central California, using steep-reflection, earthquake, and magnetic data Reexamination of the subsurface fault structure in the vicinity of the 1989 moment-magnitude-6.9 Loma Prieta earthquake, central California, using steep-reflection, earthquake, and magnetic data
We reexamine the geometry of the causative fault structure of the 1989 moment-magnitude-6.9 Loma Prieta earthquake in central California, using seismic-reflection, earthquake-hypocenter, and magnetic data. Our study is prompted by recent interpretations of a two-part dip of the San Andreas Fault (SAF) accompanied by a flower-like structure in the Coachella Valley, in southern California...
Authors
Edward Zhang, Gary Fuis, Rufus Catchings, Daniel S. Scheirer, Mark Goldman, Klaus Bauer
Subsurface geometry of the San Andreas fault in southern California: Results from the Salton Seismic Imaging Project (SSIP) and strong ground motion expectations Subsurface geometry of the San Andreas fault in southern California: Results from the Salton Seismic Imaging Project (SSIP) and strong ground motion expectations
The San Andreas fault (SAF) is one of the most studied strike‐slip faults in the world; yet its subsurface geometry is still uncertain in most locations. The Salton Seismic Imaging Project (SSIP) was undertaken to image the structure surrounding the SAF and also its subsurface geometry. We present SSIP studies at two locations in the Coachella Valley of the northern Salton trough. On our...
Authors
Gary Fuis, Klaus Bauer, Mark Goldman, Trond Ryberg, Victoria E. Langenheim, Daniel S. Scheirer, Michael Rymer, Joann Stock, John Hole, Rufus Catchings, Robert Graves, Brad Aagaard
Correlated patterns in hydrothermal plume distribution and apparent magmatic budget along 2500 km of the Southeast Indian Ridge Correlated patterns in hydrothermal plume distribution and apparent magmatic budget along 2500 km of the Southeast Indian Ridge
Multiple geological processes affect the distribution of hydrothermal venting along a mid-ocean ridge. Deciphering the role of a specific process is often frustrated by simultaneous changes in other influences. Here we take advantage of the almost constant spreading rate (65–71 mm/yr) along 2500 km of the Southeast Indian Ridge (SEIR) between 77°E and 99°E to examine the spatial density...
Authors
Edward Baker, Christophe Hemond, Anne Briais, Marcia Maia, Daniel S. Scheirer, Sharon Walker, Tingting Wang, Yongshun Chen
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 Athens, Daniel S. Scheirer, Gary Fuis, Michael Rymer, Mark Goldman
Borehole-explosion and air-gun data acquired in the 2011 Salton Seismic Imaging Project (SSIP), southern California: description of the survey Borehole-explosion and air-gun data acquired in the 2011 Salton Seismic Imaging Project (SSIP), southern California: description of the survey
The Imperial and Coachella Valleys are being formed by active plate-tectonic processes. From the Imperial Valley southward into the Gulf of California, plate motions are rifting the continent apart. In the Coachella Valley, the plates are sliding past one another along the San Andreas and related faults (fig. 1). These processes build the stunning landscapes of the region, but also...
Authors
Elizabeth Rose, Gary Fuis, Joann Stock, John Hole, Annie Kell, Graham Kent, Neal Driscoll, Mark Goldman, Angela Reusch, Liang Han, Robert Sickler, Rufus Catchings, Michael Rymer, Coyn Criley, Daniel S. Scheirer, Steven Skinner, Coye Slayday-Criley, Janice Murphy, Edward Jensen, Robert McClearn, Alex Ferguson, Lesley Butcher, Max Gardner, Iain D. Emmons, Caleb Loughran, Joseph Svitek, Patrick C. Bastien, Joseph Cotton, David Croker, Alistair Harding, Jeffrey Babcock, Steven Harder, Carla Rosa
High-resolution seismic-reflection and marine-magnetic data from offshore central California--San Gregorio to Point Sur High-resolution seismic-reflection and marine-magnetic data from offshore central California--San Gregorio to Point Sur
The U.S. Geological Survey collected high-resolution seismic-reflection data on four surveys (S-N1-09-MB, S-15-10-NC, S-06-11-MB, and S-04-12-MB) and marine-magnetic data on one survey (S-06-11-MB) between 2009 and 2012, offshore of central California between San Gregorio and Point Sur. This work was supported in part by the California Seafloor Mapping Program. The survey areas span...
Authors
Ray Sliter, Samuel Johnson, Janet Watt, Daniel S. Scheirer, Parker Allwardt, Peter J. Triezenberg
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 Bova, Victoria E. Langenheim, Lauren E. Shumaker, Daniel S. Scheirer
gravmagsubs: Gravitational and magnetic attraction of 3-D vertical rectangular prisms gravmagsubs: Gravitational and magnetic attraction of 3-D vertical rectangular prisms
gravmagsubs is a software package for the R language that provides tools for forward modeling gravity and magnetic anomalies from 3-D right rectangular prisms. The gravity anomaly is defined as the vertical component of gravitational acceleration, while the magnetic anomaly includes the effects of both induced and remanent magnetization. The package can model the total anomaly from a...
Science and Products
Ground Magnetic Observations of the Mammoth Magnetic Anomaly, Pinal County, Arizona, May 2025 Ground Magnetic Observations of the Mammoth Magnetic Anomaly, Pinal County, Arizona, May 2025
This data release provides ground magnetic data collected in May 2025 at the Mammoth Magnetic Anomaly (MMA) site in Pinal County, Arizona. These data were collected to validate and characterize a large aeromagnetic anomaly observed in an airborne survey of southeastern Arizona (Scheirer et al., 2025). The geophysical fieldwork was funded by the Earth Mapping Resources Initiative. Ground...
Airborne magnetic and radiometric data acquired over parts of Cochise, Graham, Greenlee, Pima, Pinal, and Santa Cruz Counties, Arizona Airborne magnetic and radiometric data acquired over parts of Cochise, Graham, Greenlee, Pima, Pinal, and Santa Cruz Counties, Arizona
This data release provides digital flight line data for a high-resolution airborne magnetic and radiometric survey of the Arizona Porphyry Copper Belt in southeastern Arizona. The airborne survey was funded by the Earth Mapping Resources Initiative. NV5 Geospatial, in collaboration with EDCON-PRJ, Inc., acquired high-precision airborne magnetic and radiometric data from November 15, 2023...
Sediment Thickness Data in the Deep-Sea Basins of the Bering Sea Sediment Thickness Data in the Deep-Sea Basins of the Bering Sea
A raster grid of sediment thickness in GeoTIFF format (BeringSeaBasins-SedimentThicknessGrid.tif) of the Aleutian, Bowers, and Komandorsky Basins was created by merging GeoTIFF grids of the Aleutian and Bowers Basins and of the Komandorsky Basin, provided in other sections of this data release. The raster grid file, along with a corresponding CSDGM FGDC-compliant metadata file, is...
Marine Magnetic Anomalies of the Bering Sea and Pacific Ocean North of 35°N Marine Magnetic Anomalies of the Bering Sea and Pacific Ocean North of 35°N
The text file in CSV (comma-separated values) format contains marine magnetic data from 291 cruises in the Northern Pacific Ocean and Bering Sea. These data originate from two sources: 266 cruises from the National Oceanic and Atmospheric Administration (NOAA) National Centers for Environmental Information (NCEI) Marine Trackline Geophysical Database (GEODAS) -- https://www.ncei.noaa.gov...
Marine magnetic data from twelve cruises of Pioneer and Rehoboth in 1955 and 1956 off British Columbia, Washington, Oregon, and California Marine magnetic data from twelve cruises of Pioneer and Rehoboth in 1955 and 1956 off British Columbia, Washington, Oregon, and California
This shapefile contains total‐field marine magnetic data from eleven cruises of the USCGS ship Pioneer (OSS‐31) and one cruise from the USS Rehoboth (AGS‐50) in deep water off the west coast of the United States and southern British Columbia in 1955 and 1956. Magnetic anomalies are calculated with the latest definitive geomagnetic reference field (DGRF) included in the 12th Generation of...
gravmagsubs: Gravitational and magnetic attraction of 3-D vertical rectangular prisms gravmagsubs: Gravitational and magnetic attraction of 3-D vertical rectangular prisms
gravmagsubs is a software package for the R language that provides tools for forward modeling gravity and magnetic anomalies from 3-D right rectangular prisms. The gravity anomaly is defined as the vertical component of gravitational acceleration, while the magnetic anomaly includes the effects of both induced and remanent magnetization. The package can model the total anomaly from a...
Detrital zircon geochronology and geochemistry data from the seafloor of the Bering Sea and adjacent river systems Detrital zircon geochronology and geochemistry data from the seafloor of the Bering Sea and adjacent river systems
This dataset archives geochronology and geochemistry measurements from detrital zircons collected from samples taken from the Bering Sea and its major feeder rivers.
Airborne Geophysical Survey Inventory of the Conterminous United States, Alaska, Hawaii, and Puerto Rico (ver. 5.0, April 2024) Airborne Geophysical Survey Inventory of the Conterminous United States, Alaska, Hawaii, and Puerto Rico (ver. 5.0, April 2024)
This data release is a compilation of the locations of airborne geophysical surveys in the United States. The inventory documents public airborne geophysical surveys primarily flown by or contracted by the USGS from 1943 to present. In addition, surveys from the State of Alaska, Department of Natural Resources, Division of Geological and Geophysical Surveys (DGGS): Airborne GeophysWeb...
Filter Total Items: 22
The Mammoth magnetic anomaly, Pinal County, Arizona The Mammoth magnetic anomaly, Pinal County, Arizona
A high-resolution Earth Mapping Resources Initiative airborne geophysical survey was flown in the southwest North American porphyry copper province to improve bedrock geologic maps and to identify areas that have unrecognized critical mineral resource potential. During the review of the aeromagnetic data, a distinctly monopolar-shaped, negative magnetic anomaly was observed at a flight...
Authors
Callum Walter, Daniel Scheirer, Carl Joseph Beno, Jackson Borchardt, Dylan Mark Connell
Did the Aleutian Basin form by plate capture or backarc basin opening? Did the Aleutian Basin form by plate capture or backarc basin opening?
The origin of the Aleutian Basin is unresolved because its crust is deeply buried beneath sediments. It has been interpreted as forming in the Eocene when the Beringian convergent margin jumped seaward to south of the Aleutian arc, thereby capturing a large sector of Cretaceous Pacific crust. Alternatively, it may have formed by backarc spreading. We present new magnetic and seismic...
Authors
Robert Stern, David W. Scholl, Matthew A. Malkowski, Kylara M. Martin, Ginger Barth, Daniel Scheirer
Continental shelves as detrital mixers: U-Pb and Lu-Hf detrital zircon provenance of the Pleistocene–Holocene Bering Sea and its margins Continental shelves as detrital mixers: U-Pb and Lu-Hf detrital zircon provenance of the Pleistocene–Holocene Bering Sea and its margins
Continental shelves serve as critical transfer zones in sediment-routing systems, linking the terrestrial erosional and deep-water depositional domains. The degree to which clastic sediment is mixed and homogenized during transfer across broad shelves has important implications for understanding deep-sea detrital records. Wide continental shelves are thought to act as capacitors...
Authors
Matthew A. Malkowski, Samuel Johnstone, Glenn Sharman, Colin White, Daniel Scheirer, Ginger Barth
By
Coastal and Marine Hazards and Resources Program, National Cooperative Geologic Mapping Program, Geology, Minerals, Energy, and Geophysics Science Center, Geosciences and Environmental Change Science Center, Pacific Coastal and Marine Science Center, Deep Sea Exploration, Mapping and Characterization
Gravity surveys using a mobile atom interferometer Gravity surveys using a mobile atom interferometer
Mobile gravimetry is important in metrology, navigation, geodesy, and geophysics. Atomic gravimeters could be among the most accurate mobile gravimeters, but are currently constrained by being complex and fragile. Here, we demonstrate a mobile atomic gravimeter, measuring tidal gravity variations in the laboratory as well as surveying gravity in the field. The tidal gravity measurements...
Authors
Xuejian Wu, Zachary Pagel, Bola Malek, Timothy Nguyen, Fei Zi, Daniel Scheirer, Holger Muller
Three-dimensional basin and fault structure from a detailed seismic velocity model of Coachella Valley, Southern California Three-dimensional basin and fault structure from a detailed seismic velocity model of Coachella Valley, Southern California
The Coachella Valley in the northern Salton Trough is known to produce destructive earthquakes, making it a high seismic hazard area. Knowledge of the seismic velocity structure and geometry of the sedimentary basins and fault zones is required to improve earthquake hazard estimates in this region. We simultaneously inverted first P wave travel times from the Southern California Seismic...
Authors
Rasheed Ajala, Patricia Persaud, Joann Stock, Gary Fuis, John Hole, Mark Goldman, Daniel Scheirer
Reexamination of the subsurface fault structure in the vicinity of the 1989 moment-magnitude-6.9 Loma Prieta earthquake, central California, using steep-reflection, earthquake, and magnetic data Reexamination of the subsurface fault structure in the vicinity of the 1989 moment-magnitude-6.9 Loma Prieta earthquake, central California, using steep-reflection, earthquake, and magnetic data
We reexamine the geometry of the causative fault structure of the 1989 moment-magnitude-6.9 Loma Prieta earthquake in central California, using seismic-reflection, earthquake-hypocenter, and magnetic data. Our study is prompted by recent interpretations of a two-part dip of the San Andreas Fault (SAF) accompanied by a flower-like structure in the Coachella Valley, in southern California...
Authors
Edward Zhang, Gary Fuis, Rufus Catchings, Daniel S. Scheirer, Mark Goldman, Klaus Bauer
Subsurface geometry of the San Andreas fault in southern California: Results from the Salton Seismic Imaging Project (SSIP) and strong ground motion expectations Subsurface geometry of the San Andreas fault in southern California: Results from the Salton Seismic Imaging Project (SSIP) and strong ground motion expectations
The San Andreas fault (SAF) is one of the most studied strike‐slip faults in the world; yet its subsurface geometry is still uncertain in most locations. The Salton Seismic Imaging Project (SSIP) was undertaken to image the structure surrounding the SAF and also its subsurface geometry. We present SSIP studies at two locations in the Coachella Valley of the northern Salton trough. On our...
Authors
Gary Fuis, Klaus Bauer, Mark Goldman, Trond Ryberg, Victoria E. Langenheim, Daniel S. Scheirer, Michael Rymer, Joann Stock, John Hole, Rufus Catchings, Robert Graves, Brad Aagaard
Correlated patterns in hydrothermal plume distribution and apparent magmatic budget along 2500 km of the Southeast Indian Ridge Correlated patterns in hydrothermal plume distribution and apparent magmatic budget along 2500 km of the Southeast Indian Ridge
Multiple geological processes affect the distribution of hydrothermal venting along a mid-ocean ridge. Deciphering the role of a specific process is often frustrated by simultaneous changes in other influences. Here we take advantage of the almost constant spreading rate (65–71 mm/yr) along 2500 km of the Southeast Indian Ridge (SEIR) between 77°E and 99°E to examine the spatial density...
Authors
Edward Baker, Christophe Hemond, Anne Briais, Marcia Maia, Daniel S. Scheirer, Sharon Walker, Tingting Wang, Yongshun Chen
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 Athens, Daniel S. Scheirer, Gary Fuis, Michael Rymer, Mark Goldman
Borehole-explosion and air-gun data acquired in the 2011 Salton Seismic Imaging Project (SSIP), southern California: description of the survey Borehole-explosion and air-gun data acquired in the 2011 Salton Seismic Imaging Project (SSIP), southern California: description of the survey
The Imperial and Coachella Valleys are being formed by active plate-tectonic processes. From the Imperial Valley southward into the Gulf of California, plate motions are rifting the continent apart. In the Coachella Valley, the plates are sliding past one another along the San Andreas and related faults (fig. 1). These processes build the stunning landscapes of the region, but also...
Authors
Elizabeth Rose, Gary Fuis, Joann Stock, John Hole, Annie Kell, Graham Kent, Neal Driscoll, Mark Goldman, Angela Reusch, Liang Han, Robert Sickler, Rufus Catchings, Michael Rymer, Coyn Criley, Daniel S. Scheirer, Steven Skinner, Coye Slayday-Criley, Janice Murphy, Edward Jensen, Robert McClearn, Alex Ferguson, Lesley Butcher, Max Gardner, Iain D. Emmons, Caleb Loughran, Joseph Svitek, Patrick C. Bastien, Joseph Cotton, David Croker, Alistair Harding, Jeffrey Babcock, Steven Harder, Carla Rosa
High-resolution seismic-reflection and marine-magnetic data from offshore central California--San Gregorio to Point Sur High-resolution seismic-reflection and marine-magnetic data from offshore central California--San Gregorio to Point Sur
The U.S. Geological Survey collected high-resolution seismic-reflection data on four surveys (S-N1-09-MB, S-15-10-NC, S-06-11-MB, and S-04-12-MB) and marine-magnetic data on one survey (S-06-11-MB) between 2009 and 2012, offshore of central California between San Gregorio and Point Sur. This work was supported in part by the California Seafloor Mapping Program. The survey areas span...
Authors
Ray Sliter, Samuel Johnson, Janet Watt, Daniel S. Scheirer, Parker Allwardt, Peter J. Triezenberg
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 Bova, Victoria E. Langenheim, Lauren E. Shumaker, Daniel S. Scheirer
gravmagsubs: Gravitational and magnetic attraction of 3-D vertical rectangular prisms gravmagsubs: Gravitational and magnetic attraction of 3-D vertical rectangular prisms
gravmagsubs is a software package for the R language that provides tools for forward modeling gravity and magnetic anomalies from 3-D right rectangular prisms. The gravity anomaly is defined as the vertical component of gravitational acceleration, while the magnetic anomaly includes the effects of both induced and remanent magnetization. The package can model the total anomaly from a...