Data
Data produced by staff of the Geology, Minerals, Energy, and Geophysics Science Center
Filter Total Items: 284
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...
Landslide monitoring site installation details, geotechnical parameters, hydrologic time series data, and landslide locations from storms occurring between 25 December 2022 and 19 January 2023 in the San Francisco Bay area, California. Landslide monitoring site installation details, geotechnical parameters, hydrologic time series data, and landslide locations from storms occurring between 25 December 2022 and 19 January 2023 in the San Francisco Bay area, California.
This data release provides datasets supporting research on landslides triggered by a series of storms in the San Francisco Bay Area, California, that occurred between December 25, 2022, through January 19, 2023. During this period, eight atmospheric river storms delivered intense and prolonged rainfall across the region, leading to significant hydrological responses and widespread...
Geochemical data for volcanic rocks of the northern Mojave Desert Geochemical data for volcanic rocks of the northern Mojave Desert
This release of geochemical data for the northern Mojave Desert is for 330 volcanic rocks sampled over 43 years, with an emphasis on basaltic rocks. It supports a field trip road log in the 2024 Geological Society of America Field Trip Guidebook for the Annual Meeting to be held in Anaheim, CA.
Magnetotelluric data from the Clear Lake Region, Northern California Magnetotelluric data from the Clear Lake Region, Northern California
The Clear Lake Volcanic Field (CLVF) in northern California is a young (2 Ma-0.008 Ma) volcanic system that could be hazardous upon eruption. Magnetotellurics (MT) is a passive electromagnetic geophysical method that measures subsurface electrical resistivity by recording the Earth's electrical response to natural time varying magnetic fields. To further understand the magmatic system of...
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...