{"accessLevel": "public", "bureauCode": ["010:12"], "contactPoint": {"@type": "vcard:Contact", "fn": "Keith A Howard", "hasEmail": "mailto:khoward@usgs.gov"}, "description": "We report rock and mineral K-Ar isotopic dates from 55 Cenozoic rocks and 49 pre-Cenozoic rocks from the eastern Mojave Desert in southeastern California, Nevada, and Arizona and 3 pre-Cenozoic rocks from the southern Sierra Nevada, California. For many of the samples two separate minerals were dated.  We also report Ar-Ar dates from 7 pre-Cenozoic rocks in the eastern Mojave Desert.", "distribution": [{"@type": "dcat:Distribution", "accessURL": "https://doi.org/10.5066/P13OCHZC", "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.68711bfcd4be026e1750ece2.xml", "format": "XML", "mediaType": "text/xml", "title": "Original Metadata"}], "identifier": "http://datainventory.doi.gov/id/dataset/USGS_68711bfcd4be026e1750ece2", "keyword": ["Ar-Ar dates", "Arizona", "California", "Cenozoic", "K-Ar dates", "Mojave", "Nevada", "Sierra Nevada", "USGS:68711bfcd4be026e1750ece2", "anorthoclase", "biotite", "geoscientificInformation", "hornblende", "plagioclase", "sanidine", "whole rock"], "modified": "2025-07-23T00:00:00Z", "publisher": {"@type": "org:Organization", "name": "U.S. Geological Survey"}, "spatial": "-118.5638, 33.6684, -113.4643, 36.2339", "theme": ["geospatial"], "title": "K-Ar and Ar-Ar age data for some Cenozoic and pre-Cenozoic rocks in the eastern Mojave Desert area and southern Sierra Nevada, southwestern United States"}