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Found 1069 dataset(s) matching "Geologic Age".
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This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov. This is a data table - in comma-delimited - ASCII format - which contains information about selected...
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This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov. This is a data table - in comma-delimited - ASCII format - which contains information about selected...
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This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov. This is a data table - in comma-delimited - ASCII format - which contains information about selected...
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This dataset includes four tables with isotopic data and ages for selected igneous bedrock samples collected in 2001 through 2003 from the Western Alaska Range, southcentral Alaska: (1) the...
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This dataset contains U-Pb isotopic data and associated ages of detrital zircon from sedimentary and metasedimentary rocks collected from southwestern Alaska and from the Yukon-Tanana upland and...
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This document describes sedimentary rock samples and their associated detrital zircon U-Pb data that were collected to support geologic mapping and research initiatives within the context of the...
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This U.S. Geological Survey (USGS) data release includes whole-rock major, trace, and rare earth element geochemical data, whole-rock Nd-Pb-Sr isotopic data collected by thermal ionization mass...
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This data release is companion to a manuscript entitled: "Carving North America’s Deepest Gorge: Constraints on the Timing and Mechanism of forming Hells Canyon". Here, we report cosmogenic age...
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Diet composition can be influenced by age- and sex-related factors including an individual’s morphology, social status, and acquired skills; however, specialization may only be necessary when...
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Shapefiles Defining Areas of Analysis for Proglacial Sediment Studies on Mount Rainier, 1960 to 2017
This repository contains suites of shapefiles defining areas of analysis used in Anderson and Shean (2021). Three types of shapefiles are included, each bundled into a zip file: First, polygons...
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This dataset contains the growth index from annual growth bands in the shells of two bivalve clam species (Astarte borealis and Liocyma fluctuosa) captured in the Chukchi Sea, Alaska. The growth...
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The Tri-State Mining District (TSMD) is an area encompassing portions of Kansas, Missouri, and Oklahoma in which lead and zinc mining historically occurred. To further investigate the relationship...
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This data release documents three Microsoft Excel tables; one contains noble gas isotopic data, one contains data for understanding groundwater ages in the South Rim of the Grand Canyon, and one...
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This data release includes Al-26/Be-10 cosmogenic nuclide concentrations and burial isochron ages for three locations in central Colorado, USA, with preferred burial ages ranging from ~2 Ma to 600...
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Sample Analyses: Four samples of silica sinter from Giant and Castle Geysers compo sedof opal-A or opal-A/C were analyzed for U-Th isotopes at USGS laboratories in Denver, CO...
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In April 2023, scientists from the U.S. Geological Survey (USGS) St. Petersburg Coastal and Marine Science Center (SPCMSC) collected 11 sediment vibracores within East Bay, St. Andrew Bay, Florida...
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This document includes two suites of zircon U-Pb ages that help to characterize the magmatic and sedimentary history of the North American Cordillera between ~28 and 50 degrees north. The first...
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This dataset contains analyses of samples representing the Triassic Shublik and Otuk Formations in Alaska. The samples were collected from the Brontosaurus 1 well and measured stratigraphic...
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Eggshell thickness was measured at the egg equator and sharp pole for 5 songbird species. Each egg has thickness measurements at two locations on the egg and the corresponding egg length, egg...
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This data package includes four tables of data from Pacific Black Brant (Branta bernicla nigricans) wintering along the Baja California Peninsula and Sonoran coasts of Mexico. The data include:...
