Data Releases
The data collected and the techniques used by USGS scientists should conform to or reference national and international standards and protocols if they exist and when they are relevant and appropriate. For datasets of a given type, and if national or international metadata standards exist, the data are indexed with metadata that facilitates access and integration.
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U-Pb Isotopic Data and Dates of Zircon from the Western Upper Peninsula of Michigan and Northern Wisconsin, United States U-Pb Isotopic Data and Dates of Zircon from the Western Upper Peninsula of Michigan and Northern Wisconsin, United States
This dataset contains U-Pb isotopic data and associated dates of zircon from sedimentary and metamorphic rocks collected from the western Upper Peninsula of Michigan and northern Wisconsin, United States. The samples were collected as part of geological mapping and research conducted from 2019 to 2023 and funded by the Mineral Resources Program of the U.S. Geological Survey. Zircon...
Stable hydrogen and oxygen isotopic composition of surface and groundwater samples from central and eastern Washington, USA Stable hydrogen and oxygen isotopic composition of surface and groundwater samples from central and eastern Washington, USA
In this data release, hydrogen-2 and oxygen-18 isotope ratios are presented for 158 unique sites in central and eastern Washington. There are 16 unique surface water sites with a total of 140 samples, and 142 groundwater sites with a total of 167 samples. Sample dates range from February 1993 to February 2021. Stable isotope analysis of water utilizes slight differences in the mass of...
Data for Characterization of Antimicrobial Resistance Genes in Surface Waters in Two National Parks in Alaska Data for Characterization of Antimicrobial Resistance Genes in Surface Waters in Two National Parks in Alaska
This data set describes the assessment of surface waters in Denali National Park and Preserve and Wrangell St. Elias National Park and Preserve for antimicrobial resistance genes during four summer months (May - August).
Cyanotoxins in the California Sacramento-San Joaquin Delta: Fixed Station Solid Phase Adsorption Toxin Tracking (SPATT) samplers Cyanotoxins in the California Sacramento-San Joaquin Delta: Fixed Station Solid Phase Adsorption Toxin Tracking (SPATT) samplers
This dataset is comprised of cyanotoxin concentrations in extracts from solid phase adsorption toxin tracking (SPATT) samplers deployed at fixed sampling stations in the Sacramento-San Joaquin Delta, beginning in 2020. SPATT samplers are a form of passive sampler constructed of adsorbent resin beads that concentrate cyanotoxins over time. Cyanotoxin congeners were measured from SPATT...
Simulated juvenile Chinook salmon movement and growth in the Yankee Fork of the Salmon River, Idaho: Model input parameters and results Simulated juvenile Chinook salmon movement and growth in the Yankee Fork of the Salmon River, Idaho: Model input parameters and results
The growth potential and movement propensity of juvenile Chinook salmon (Oncorhynchus tshawytscha) was simulated across 16 representative reaches in the Yankee Fork of the Salmon River (YFSR), Idaho. For growth potential, we used the Aquatic Trophic Productivity model, which incorporates dynamics of the food web members and the stream-riparian conditions at each reach. Environmental...
International Manganese Samples—The Donnel Foster Hewett Collection International Manganese Samples—The Donnel Foster Hewett Collection
International manganese samples in this collection were acquired from various countries, typically by geoscientists and university professors of the corresponding region. Manganese samples from the United States were collected in the field primarily by other USGS scientists noted in the dataset. The dataset corresponds to Hewett's physical collection of manganese-bearing samples re...