{"accessLevel": "public", "bureauCode": ["010:12"], "contactPoint": {"@type": "vcard:Contact", "fn": "Ross A Salerno", "hasEmail": "mailto:rsalerno@usgs.gov"}, "description": "We present isotopic and geochemical data for several Archean and Paleoproterozoic metamorphic rocks in the Penokean orogen, USA. These data include new U-Pb and trace element analyses of apatite, titanite, and monazite; bulk rock major and trace element compositions; and whole rock and garnet Lu-Hf and Sm-Nd isotope compositions.", "distribution": [{"@type": "dcat:Distribution", "accessURL": "https://doi.org/10.5066/P1ST4YLK", "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.688bbe73d4be025d5d20f70c.xml", "format": "XML", "mediaType": "text/xml", "title": "Original Metadata"}], "identifier": "http://datainventory.doi.gov/id/dataset/USGS_688bbe73d4be025d5d20f70c", "keyword": ["Precambrian", "USGS:688bbe73d4be025d5d20f70c", "geochronology", "geoscientificInformation", "metamorphic rocks"], "modified": "2026-01-07T00:00:00Z", "publisher": {"@type": "org:Organization", "name": "U.S. Geological Survey"}, "spatial": "-90.0000, 45.6140, -87.0557, 46.8902", "theme": ["geospatial"], "title": "Geochronology and geochemistry of Paleoproterozoic metamorphic rocks in the Midcontinent"}