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This dataset contains absolute-gravity measurements made using an A-10 absolute gravity meter (Micro-g Lacoste, Inc.) in 2019 in Pinal County, Arizona. Measurements were made at a total of 19 different stations used by the Arizona Department of Water Resources (ADWR) to monitor aquifer-storage changes. Data are presented in tabular and spatial vector (point) form, including relevant parameters used for processing. Data were output by g software (Micro-g Lacoste, Inc.) version 9.12.04.23. A correction for laser-frequency drift was applied, based on regular calibration of the HeNe laser used in the A-10 against an iodine-stabilized laser.
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This dataset consists of point gravity station data for 95 stations in the middle Carson River basin as published on figure 7 in the U.S. Geological Survey Scientific Investigations Report 2011-5055. The points have values of the complete Bouguer anomaly and observed gravity. In addition, 641 selected gravity stations from the U.S. Geological Survey Data Series 42 titled "Gravity data of Nevada" used in this study are included for reference and users are advised to reference that publication for information on those data. Reference cited Ponce, D.A., 1997, Gravity data of Nevada: U.S. Geological Survey Data Series 42, 27 p., https://doi.org/10.3133/ds42.
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This dataset consists of polyline estimates of the thickness of basin-fill sediments at 200-foot contour intervals for the middle Carson River basin as published on figure 9 in the U.S. Geological Survey Scientific Investigations Report 2011-5055. The estimates were made using gravity data collected at 736 stations in the middle Carson River basin reduced to a residual complete Bouguer anomaly. A relation between residual gravity and depth to bedrock was developed from descriptions on drillers logs of 25 wells that encountered bedrock.
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Gravity data were collected from 2006 through 2015 to assist in mapping subsurface geology in the southern San Luis Basin, northern New Mexico. This data release provides principal facts for 566 new gravity stations that were acquired to fill in gaps in the existing public gravity data coverage.
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The Mound Spring quadrangle, the southwestern-most 7.5'quadrangle of the area of the Las Vegas 1:100,000-scalequadrangle, is entirely within the Pahrump Valley, spanning theNevada/California State line. New geologic mapping of thepredominantly Quaternary materials is combined with new studiesof gravity and geochronology in this quadrangle. Elevenpredominantly fine-grained units are delineated, including playasediment, dune sand, and deposits associated with several cyclesof past groundwater discharge and distal fan sedimentation.These units are intercalated with 5 predominantly coarse-grainedalluvial-fan and wash gravel units mainly derived from the SpringMountains. The gravel units are distinguished on the basis...
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Aeromagnetic surveys of Nevada, merged to form seamless grids across the state. Gravity anomaly data are provided as well. Data provided in a variety of formats.
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Physical properties of geologic units are important for geophysical interpretation because they provide the tie between lithology and geophysical fields. For gravity data, the applicable physical property is bulk density, which is the overall mass per unit volume of rocks, sediments, and their pore spaces. Bulk dry density is the mass per unit volume measured when the sample is dry. Saturated density is the mass per unit volume measured when the sample is saturated with fresh water, which has a density of 1,000 kg/m^3. The two values are commonly compared in order to determine the porosity of a sample, that is, the percentage of the volume that is composed of open space. Density is commonly reported in kilograms...
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Gravity data were collected from 2016 through 2018 to assist in mapping subsurface geology in northeastern Iowa. This data release provides principal facts for 1080 new gravity stations that were acquired to supplement existing public gravity data coverage. References cited: Blakely, R.J., 1995, Potential Theory in Gravity and Magnetic Applications, Cambridge University Press, 441 p. International Association of Geodesy, 1971, Geodetic reference system 1967: International Association of Geodesy Special Publication No. 3, 116 p. Morelli, C., ed., 1974, the International gravity standardization net 1971: International Association of Geodesy Special Publication no.4, 194 p. Plouff, Donald, 1977, Preliminary documentation...
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This dataset contains absolute-gravity measurements made using an A-10 absolute gravity meter (Micro-g Lacoste, Inc.) between 2009 and 2017 in the Big Chino Subbasin, Yavapai County, Arizona. Measurements were made about 3 times per year at a total of 33 different stations. Data are presented in tabular form, including relevant parameters used for processing. Data were output by g software (Micro-g Lacoste, Inc.) version 9.12.04.23. A correction for laser-frequency drift was applied, based on regular calibration of the HeNe laser used in the A-10 against an iodine-stabilized laser. A second soil-moisture correction was applied based on satellite soil-moisture measurements, an infiltration model, and the elevation...
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The datasets include gravity measurements and anomalies and physical property measurements of the northern Harrat Rahat, Saudi Arabia.
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Regional surface elevation grid files (provided in Grid eXchange File format) were used to study crustal architecture beneath the Southern Midcontinent (USA) by McCafferty and others (2019). The study covered a rectangular, multi-state area of 924 by 924 kilometers centered on Missouri, and a corresponding volume extending from the topographic surface to a depth of 50 kilometers below sea level. The grid files (magnetic field observation surface, topographic surface, Precambrian basement surface, and Moho interface) were used to construct templates and initial physical property models for 3D inversions. A masked version of the Precambrian basement surface grid was used to remove inverted densities and magnetic susceptibilities...
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New gravity compilation has been compiled for the Lake Superior region. The gravity compilation includes survey stations available from Natural Resources Canada, National Centers for Environmental Information (formerly National Geophysical Data Center), Minnesota Geological Survey, and U.S. Geological Survey. Individual databases were combined and duplicates were removed resulting in a database of 63,880 gravity stations. The gravity station data were reprocessed from observed gravity to simple Bouguer anomaly following standard methods that depend on the station type (for example, land, lake surface, or lake bottom observation) and used a reduction density of 2,670 kg/m3. The compilation provides a consistent dataset...
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The U.S. Geological Survey (USGS) collected rock physical property measurements to help understand causative sources of gravity and magnetic survey anomalies in the Iron Mountain-Menominee region, Michigan-Wisconsin. A total of 2,356 measurements of magnetic susceptibility and density from 152 locations have been conducted on Precambrian rocks. The measurements aid in interpretation of newly acquired ground-based gravity and airborne magnetic data that are helping to understand concealed Precambrian geology and potential mineral resources. Multiple measurements were made at each location and sample lithology units were derived from existing USGS geologic maps noted in the supplemental information section of the...
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New gravity measurements in the vicinity of San Bernardino, Californiawere collected to help define the characteristics of the Rialto-Coltonfault. The data were processed using standard reduction formulas andparameters. Rock properties such as lithology, magnetic susceptibilityand density also were measured at several locations.


map background search result map search result map South Carolina aeromagnetic and gravity maps and data Nevada magnetic and gravity maps and data Geophysical terranes of the Great Basin and parts of surrounding provinces Illinois, Indiana, and Ohio magnetic and gravity maps and data Geologic Map of the Mound Spring Quadrangle, Nye and ClarkCounties, Nevada, and Inyo County, California Principal Facts for Gravity Stations in the Vicinity of San Bernardino, Southern California Gravity and magnetic surveys over the Santa Rita fault system, southeastern Arizona Geophysical studies of the Crump Geyser known geothermal resource area, Oregon, in 1975 Gravity data from Dry Lake and Delamar Valleys, east-central Nevada Principal facts of gravity data in the southern San Luis Basin, northern New Mexico Physical Properties by Geologic Unit in the Southern San Luis Basin, New Mexico Updated gravity stations and anomaly compilation over Lake Superior Gravity and physical property data of the northern Harrat Rahat, Saudi Arabia Repeat microgravity data from the Big Chino Subbasin, 2001-2017, Yavapai County, Arizona Principal facts of regional gravity data in northeast Iowa Elevation surface grids for the southern midcontinent Absolute gravity data from Pinal County, Arizona, 2019 Gravity station data, middle Carson River basin, Nevada (from U.S. Geological Survey Scientific Investigations Report 2011-5055, figure 7) Estimated thickness of unconsolidated basin-fill sediments, middle Carson River basin, Nevada (from U.S. Geological Survey Scientific Investigations Report 2011-5055, figure 9) Density and magnetic susceptibility measurements on Precambrian rocks in the Iron Mountain-Menominee region, Michigan-Wisconsin Gravity and magnetic surveys over the Santa Rita fault system, southeastern Arizona Geologic Map of the Mound Spring Quadrangle, Nye and ClarkCounties, Nevada, and Inyo County, California Geophysical studies of the Crump Geyser known geothermal resource area, Oregon, in 1975 Repeat microgravity data from the Big Chino Subbasin, 2001-2017, Yavapai County, Arizona Estimated thickness of unconsolidated basin-fill sediments, middle Carson River basin, Nevada (from U.S. Geological Survey Scientific Investigations Report 2011-5055, figure 9) Gravity data from Dry Lake and Delamar Valleys, east-central Nevada Gravity and physical property data of the northern Harrat Rahat, Saudi Arabia Density and magnetic susceptibility measurements on Precambrian rocks in the Iron Mountain-Menominee region, Michigan-Wisconsin Principal facts of gravity data in the southern San Luis Basin, northern New Mexico Physical Properties by Geologic Unit in the Southern San Luis Basin, New Mexico Gravity station data, middle Carson River basin, Nevada (from U.S. Geological Survey Scientific Investigations Report 2011-5055, figure 7) Absolute gravity data from Pinal County, Arizona, 2019 Principal facts of regional gravity data in northeast Iowa Illinois, Indiana, and Ohio magnetic and gravity maps and data South Carolina aeromagnetic and gravity maps and data Nevada magnetic and gravity maps and data Updated gravity stations and anomaly compilation over Lake Superior Elevation surface grids for the southern midcontinent Geophysical terranes of the Great Basin and parts of surrounding provinces