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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...
Domestic and international rock geochemistry of ore and host rocks generated by the Critical Minerals Mapping Initiative Domestic and international rock geochemistry of ore and host rocks generated by the Critical Minerals Mapping Initiative
Geochemical data included were generated as part of the Critical Minerals Mapping Initiative (CMMI). Individual samples are classified according to the Hofstra et al. (2021) CMMI deposit classification scheme. The goal of CMMI is to collaborate with Geoscience Australia and the Geological Survey of Canada to build a global database of critical minerals in a variety of ore deposits. The...
Magnetic susceptibility and gamma ray spectrometry measurements in southwestern Montana, 2025 Magnetic susceptibility and gamma ray spectrometry measurements in southwestern Montana, 2025
This dataset includes rock magnetic susceptibility and gamma ray spectrometry measurements from 204 outcrops in southwest Montana during 2025. The measurements were collected to understand the causative sources of airborne magnetic and radiometric survey anomalies in the Idaho-Montana porphyry belt. Sixteen magnetic susceptibility measurements were collected at each analyzed site using a...
Magnetic susceptibility, color spectrophotometry, X-ray fluorescence (XRF), and particle size data of the 82-foot NJ-GSB sediment core from Great Swamp National Wildlife Refuge, Morris County, New Jersey Magnetic susceptibility, color spectrophotometry, X-ray fluorescence (XRF), and particle size data of the 82-foot NJ-GSB sediment core from Great Swamp National Wildlife Refuge, Morris County, New Jersey
Analyses were conducted in 2025 to examine glaciolacustrine rhythmic laminations interpreted as annual layers (varves) in a sediment core collected from Great Swamp National Wildlife Refuge in Morris County, New Jersey in 2010. The dataset includes results from portable X-ray fluorescence (pXRF), particle size analysis (PSA), visible (color) and near-infrared spectrophotometry, and...
Select Mineral Abundancy Data from Alaska Placer and Pan Concentrate Samples Reanalyzed from 2020-2025 Select Mineral Abundancy Data from Alaska Placer and Pan Concentrate Samples Reanalyzed from 2020-2025
Samples from the Alaska Placer Concentrate Collection (APCC) were retrieved from the U.S. Geological Survey (USGS) National Geochemical Sample Archives and submitted for mineralogical analysis at the Colorado School of Mines. The APPC contains samples from placer mining operations throughout Alaska. The original collection contained approximately 5,000 samples that were collected by USGS
Bioassay data for aircraft deicer and anti-icer formulations and surface water receiving runoff from Milwaukee Mitchell International Airport from 1996-2021 Bioassay data for aircraft deicer and anti-icer formulations and surface water receiving runoff from Milwaukee Mitchell International Airport from 1996-2021
This data release includes two datasets: The first dataset includes results of bioassay (acute and chronic toxicity) tests on five aircraft deicer and anti-icer products, which were tested for determination of the 15-min EC50 (Aliivibrio fischeri), the acute LC50 (Ceriodaphnia dubia and Pimephales promelas), and the chronic IC25 (C. dubia, P. promelas, and R. subcapitata) at the...