Data

This U.S. Geological Survey (USGS) data release accompanies upcoming publication 'High Spatial Resolution Re-Os Dating of Paleozoic Organic-Rich Black Shales by LA-ICP-MS/MS' to be published in the Chemical Geology. The data set reports the Re-Os isotopic composition, Re-Os age and select trace element contents of the mineral molybdenite associated with ore deposits in the United States...

This data release provides digital flight line data for a high-resolution airborne magnetic and radiometric survey over the Cuyuna Iron Range in central Minnesota. The airborne survey was funded by the Earth Mapping Resources Initiative (Earth MRI). The survey was designed by the USGS in collaboration with the Minnesota Geological Survey, the University of Minnesota Natural Resources...

Radiometric data (gamma ray spectrometry) were collected via a small uncrewed airborne system (sUAS) in June 2024 to characterize four distinct mine waste features in Southwestern New Mexico. Walking surveys with a handheld meter were also conducted over parts of the survey areas to provide ground truth checks for the airborne data. Survey sites and their respective areas covered include...

This data release provides digital flight line data for a high-resolution airborne magnetic and radiometric survey over the southern alkaline igneous belt in south-central New Mexico. The airborne survey was funded by the Earth Mapping Resources Initiative (Earth MRI). The survey was designed by the United States Geological Survey (USGS) in collaboration with the New Mexico Bureau of...

This data release provides digital flight line data for a high-resolution airborne magnetic and radiometric survey over the Adirondack Lowlands in Northwest New York. The airborne survey was funded by the Earth Mapping Resources Initiative (Earth MRI). The survey was designed by the USGS in collaboration with the New York State Geological Survey, and contracted by the USGS. The survey...

Ar/Ar data are for 1 sample that constrains the cooling age of biotite. The geochronology provides time constraints for the age of gold mineralization in the Tuvatu Gold Mine in Fiji. Samples were provided by Thomas Monecke (Colorado School of Mines). Samples were analyzed in January 2024.

This data release presents U-Pb LA-ICP-MS ages for eight volcanic and plutonic rocks located in the Wallace and Sandpoint 1° x 2° quadrangle region of in northern Idaho and northwestern Montana. The samples were collected by Jeffery L. Mauk and Micah A. Hernandez in 2021 and were analyzed via LA-ICP-MS in 2023 in the Denver Radioisotope Lab. The weighted mean age from all concordant...

Groundwater, soil pore water, and surface water were collected in and near wetland P1 in the Cottonwood Lake Study Area, Stutsman County, North Dakota in August 2013. Groundwater was collected from established wells (17, 18, and 22) via peristaltic pump. Surface water was collected from P1 ponded water via grab sample. Soil pore water was collected using drive point samplers and one...

Experiments were conducted in the U.S. Geological Survey (USGS) Aqueous Trace Element Analysis Laboratory (ATEAL) in Denver, CO to support development and validation of a method for preparing biological materials for silicon analysis by solution phase inductively coupled plasma mass spectrometry (ICP-MS). The objective was to stabilize volatile silicon species resulting from a digestion...

The U.S. Geological Survey (USGS) collects magnetic susceptibility measurements on in-situ and laboratory rock samples to help identify the sources of anomalies in aeromagnetic surveys in Alaska. Magnetic susceptibility is a measure of how much a material will become magnetized in an applied magnetic field and is the ratio of magnetization, M (magnetic moment per unit volume), to the...

This U.S. Geological Survey (USGS) data release contains data from stream water and groundwater samples collected in July through October 2024 at the Perigo Mine site in Gilpin County, northern Colorado. Data were collected as part of a study aimed at characterizing the local groundwater flow system in the hillslope hosting the mine’s draining crosscut tunnel, and identifying sources of...

This data release provides digital flight line data for a high-resolution airborne magnetic and radiometric survey over the Laramie Mountains region of Wyoming. The airborne survey was funded by the Earth Mapping Resources Initiative (Earth MRI). The survey was designed by the USGS in collaboration with the Wyoming State Geological Survey and contracted by the USGS. The survey was...