{"accessLevel": "public", "bureauCode": ["010:12"], "contactPoint": {"@type": "vcard:Contact", "fn": "U.S. Geological Survey, Alaska Science Center", "hasEmail": "mailto:gs-ak_asc_datamanagers@usgs.gov"}, "description": "This data release contains 54 (U-Th)/He dates acquired from detrital magnetite in stream sediments adjacent to the Taurus Porphyry Cu-Mo(-Au) deposit in eastern interior Alaska's Yukon-Tanana Upland. Measured parameters include Helium-4, Uranium-238, Thorium-232, measured grain geometry factors, and all associated analytical uncertainties. Final (U-Th)/He dates along with uncertainties related to alpha ejection correction are provided.", "distribution": [{"@type": "dcat:Distribution", "accessURL": "https://doi.org/10.5066/P14GKLTM", "description": "Landing page for access to the data", "format": "XML", "mediaType": "application/http", "title": "Digital Data"}, {"@type": "dcat:Distribution", "description": "The metadata original format", "downloadURL": "https://data.usgs.gov/datacatalog/metadata/USGS.68b21171d4be0234b611e1df.xml", "format": "XML", "mediaType": "text/xml", "title": "Original Metadata"}], "identifier": "http://datainventory.doi.gov/id/dataset/USGS_68b21171d4be0234b611e1df", "keyword": ["Alaska", "Detrital", "Earth science", "GeoScientificInformation", "Geochronology", "Geology", "Magnetite", "Metamorphic rocks", "Sedimentary rocks", "Taurus Porphyry Deposit", "U-Th", "U-Th/He", "USGS:68b21171d4be0234b611e1df", "Uranium-Thorium analysis", "Yukon-Tanana Upland"], "modified": "2026-05-02T00:00:00Z", "publisher": {"@type": "org:Organization", "name": "U.S. Geological Survey"}, "spatial": "-141.575, 63.600, -141.007, 63.690", "theme": ["geospatial"], "title": "(U-Th)/He Dates of Detrital Magnetite from Streams Draining the Taurus Porphyry Cu Deposit, Alaska, United States"}