Data
Data produced by staff of the Geology, Minerals, Energy, and Geophysics Science Center
Filter Total Items: 288
Geochemistry, olivine chemistry, microXRF chemical maps, and isotope geochemistry of komatiitic volcanic rocks and U-Pb geochronology of metasedimentary rocks from the Bradley Peak and South Pass greenstone terranes, Wyoming Province Geochemistry, olivine chemistry, microXRF chemical maps, and isotope geochemistry of komatiitic volcanic rocks and U-Pb geochronology of metasedimentary rocks from the Bradley Peak and South Pass greenstone terranes, Wyoming Province
Bradley Peak and South Pass are two ca. 2.7 Ga greenstone terranes in the Archean Wyoming Province, USA that contain mafic-ultramafic metavolcanic rocks. This dataset contains five Comma Separated Value (CSV) files of tabular data, a data dictionary for tabular data (Data_Dictionary.csv), a shapefile with sample locations, and microXRF images. Wholerock_geochemistry.csv includes whole...
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...
Soil data release of Open-File Report 02-277, collected on marine terraces near Santa Cruz, California in 1981 Soil data release of Open-File Report 02-277, collected on marine terraces near Santa Cruz, California in 1981
This data release represents samples collected in 1981 along a series of five marine terraces between Ano Nuevo and Santa Cruz in California as a part of a U.S. Geological Survey project led by Dennis Marchand to study soil chronosequences in the Western United States. These sequential surfaces of soils have similar key elements for development in the slope, climate, vegetation, and...
Subsurface Stratigraphic Horizon Data Collected from Oil and Gas Wells in the Sacramento-San Joaquin Valley and Surrounding Region Subsurface Stratigraphic Horizon Data Collected from Oil and Gas Wells in the Sacramento-San Joaquin Valley and Surrounding Region
This report and associated dataset, contains subsurface geologic information collected in the Sacramento-San Joaquin Valley. The primary data includes X, Y, Z locations of stratigraphic horizons and, to a much lesser extent, geologic structures where penetrated by oil and gas wells in the subsurface as recorded in well logs and well records. Selected oil and gas wells are not only...
Sub-Fossil Charcoal Particle Counts and Radiocarbon Age Determinations from a 2003 Core Recovered in a Perennial Wetland at Paixban, Northern Guatemala Sub-Fossil Charcoal Particle Counts and Radiocarbon Age Determinations from a 2003 Core Recovered in a Perennial Wetland at Paixban, Northern Guatemala
Sedimentary charcoal particle data and 14C age control measurements derived from a core recovered from Paixban, a wetland/lake in northern Guatemala in 2003
Annual repeat magnetotelluric data for monitoring The Geysers Geothermal Field, California (2021-2023) Annual repeat magnetotelluric data for monitoring The Geysers Geothermal Field, California (2021-2023)
The Geysers geothermal field in northern California is currently the largest energy producing steam field in the world. To better understand temporal subsurface changes in the steam field a geophysical monitoring project including continuous passive seimsic and repeat magnetotelluric measurements was funded by the California Energy Commission and led by Lawrence Berkeley National Lab. As...
Georectified mosaic of historical aerial photographs of the Colorado River in Palo Verde Valley, Arizona and California, acquired in 1930 Georectified mosaic of historical aerial photographs of the Colorado River in Palo Verde Valley, Arizona and California, acquired in 1930
This product is a georectified and tonally balanced mosaic of aerial photographs collected in 1930 by the U.S. Bureau of Reclamation along a portion of the floodplain of the Colorado River in Palo Verde Valley, Arizona and California. This dataset is a primary resource for the development of a surficial geologic map showing the floodplain and river channel characteristics along the...
Sulfur isotopes and geochemistry of sulfate and sulfide minerals in the Mountain Pass Intrusive Suite, 2025 Sulfur isotopes and geochemistry of sulfate and sulfide minerals in the Mountain Pass Intrusive Suite, 2025
Sulfur minerals, including sulfates (barite, celestine) and sulfides (pyrite, galena, chalcopyrite) are common throughout the Mountain Pass carbonatite. Changes in the sulfur isotope chemistry of sulfate and sulfide minerals record changes in temperature and oxygen fugacity in the system from which they precipitate, and early primary sulfate and/or sulfide minerals may record the primary...
Carbon and oxygen isotope composition, geochemistry, and petrography of carbonate minerals in the Mountain Pass carbonatite Carbon and oxygen isotope composition, geochemistry, and petrography of carbonate minerals in the Mountain Pass carbonatite
This data release contains in situ carbon and oxygen isotope analyses of calcite and dolomite collected via secondary ion mass spectrometry (SIMS), as well as major and trace element geochemical data, bulk mineral carbon and oxygen isotope data, and whole rock geochemistry for the samples included in this study. Also included are images from analyzed thin sections that show the sample...
Borehole information from the lower Colorado River corridor, Arizona, Nevada, and California Borehole information from the lower Colorado River corridor, Arizona, Nevada, and California
This data release provides location information and lithologic intervals for boreholes compiled by the USGS between 2016 and 2020 for use during subsurface geologic mapping of the lower Colorado River corridor. The data provided include a spreadsheet of borehole information, that contains the well name, the information source, and positional information regarding the well location. A...
Geochemical data for ultramafic rocks and sulfide minerals from the disrupted lower stratigraphy of the Stillwater Complex, USA Geochemical data for ultramafic rocks and sulfide minerals from the disrupted lower stratigraphy of the Stillwater Complex, USA
The layered mafic and ultramafic Stillwater Complex in southwest Montana is known for its platinum-group element (PGE) production from reef-style mineralization (J-M Reef) in the Lower Banded series. Rocks near the base of the complex—the Basal series and Ultramafic series, Peridotite zone—also host elevated concentrations of Ni, Cu, Co, Cr, and PGE. These rocks of the complex’s lower...
Whole rock geochemical data from Arizona porphyry mineral systems (2024) Whole rock geochemical data from Arizona porphyry mineral systems (2024)
This report includes whole rock geochemical data from a newly collected suite of samples from igneous systems across Arizona. The data release includes samples collected in calendar year 2024 that support an ongoing, multi-year project dedicated to characterizing magmatic porphyry systems toward understanding possible basement influence on porphyry style mineralization. This preliminary...