{"accessLevel": "public", "bureauCode": ["010:12"], "contactPoint": {"@type": "vcard:Contact", "fn": "Lauren N Harrison", "hasEmail": "mailto:lnharrison@usgs.gov"}, "description": "The Hawaiian-Emperor chain, the surface expression of the Hawaiian mantle plume which has been active for at least 81 Ma, is divided into the Emperor Seamounts (81-47 Ma), Northwest Hawaiian Ridge (NWHR, 47-6 Ma), and Hawaiian Islands (<6 Ma). Hawaiian volcanism evolves through four volcanic stages: alkalic preshield, tholeiitic shield (80-90% volcano volume), alkalic postshield (\u223c1%), and silica undersaturated rejuvenated (<0.1%). This data release contains tables with new data consisting of major element oxide concentrations, trace element concentrations, and radiogenic-isotope compositions (87Sr/86Sr, 143Nd/144Nd, 176Hf/177Hf, 206Pb/204Pb, 207Pb/204Pb, 208Pb/204Pb) from postshield basalts from 14 NWHR and young Emperor Seamount volcanoes (~8.5-55 Ma). These measurements were made on whole rock samples that were collected via legacy dredges or submersible remotely operated vehicle dives.", "distribution": [{"@type": "dcat:Distribution", "accessURL": "https://doi.org/10.5066/P9KBI0Y1", "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.641b258ad34e4c337f0c2201.xml", "format": "XML", "mediaType": "text/xml", "title": "Original Metadata"}], "identifier": "http://datainventory.doi.gov/id/dataset/USGS_641b258ad34e4c337f0c2201", "keyword": ["Geochemistry", "Hawaii", "Isotopes", "Major and Trace Elements", "Oceanic Island Basalt", "USGS:641b258ad34e4c337f0c2201"], "modified": "2023-04-21T00:00:00Z", "publisher": {"@type": "org:Organization", "name": "U.S. Geological Survey"}, "spatial": "171.0000, 22.2688, -165.0000, 39.0000", "theme": ["geospatial"], "title": "Elemental and Lead-Hafnium-Neodymium-Strontium Isotopic Composition of a Suite of Northwest Hawaiian Ridge Postshield Lavas"}