{"@context":{"@vocab":"https://cir.nii.ac.jp/schema/1.0/","rdfs":"http://www.w3.org/2000/01/rdf-schema#","dc":"http://purl.org/dc/elements/1.1/","dcterms":"http://purl.org/dc/terms/","foaf":"http://xmlns.com/foaf/0.1/","prism":"http://prismstandard.org/namespaces/basic/2.0/","cinii":"http://ci.nii.ac.jp/ns/1.0/","datacite":"https://schema.datacite.org/meta/kernel-4/","ndl":"http://ndl.go.jp/dcndl/terms/","jpcoar":"https://github.com/JPCOAR/schema/blob/master/2.0/"},"@id":"https://cir.nii.ac.jp/crid/1360011145602865664.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1073/pnas.1608824114"}},{"identifier":{"@type":"URI","@value":"http://www.pnas.org/syndication/doi/10.1073/pnas.1608824114"}},{"identifier":{"@type":"URI","@value":"https://pnas.org/doi/pdf/10.1073/pnas.1608824114"}}],"dc:title":[{"@value":"Timing and tempo of the Great Oxidation Event"}],"description":[{"type":"abstract","notation":[{"@value":"<jats:title>Significance</jats:title>\n          <jats:p>\n            We present U-Pb ages for the extensive Ongeluk large igneous province, a large-scale magmatic event that took place near the equator in the Paleoproterozoic Transvaal basin of southern Africa at ca. 2,426 Ma. This magmatism also dates the oldest Paleoproterozoic global glaciation and the onset of significant atmospheric oxygenation. This result forces a significant reinterpretation of the iconic Transvaal basin stratigraphy and implies that the oxygenation involved several oscillations in oxygen levels across 10\n            <jats:sup>−5</jats:sup>\n            present atmospheric levels before the irreversible oxygenation of the atmosphere. Data also indicate that the Paleoproterozoic glaciations and oxygenation were ushered in by assembly of a large continental mass, extensive magmatism, and continental migration to near-equatorial latitudes, mirroring a similar chain of events in the Neoproterozoic.\n          </jats:p>"}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1380011145602865665","@type":"Researcher","foaf:name":[{"@value":"Ashley P. Gumsley"}],"jpcoar:affiliationName":[{"@value":"Department of Geology, Lund University, Lund 223 62, Sweden;"}]},{"@id":"https://cir.nii.ac.jp/crid/1380011145602865669","@type":"Researcher","foaf:name":[{"@value":"Kevin R. Chamberlain"}],"jpcoar:affiliationName":[{"@value":"Department of Geology and Geophysics, University of Wyoming, Laramie, WY 82071;"},{"@value":"Faculty of Geology and Geography, Tomsk State University, Tomsk 634050, Russia;"}]},{"@id":"https://cir.nii.ac.jp/crid/1380011145602865792","@type":"Researcher","foaf:name":[{"@value":"Wouter Bleeker"}],"jpcoar:affiliationName":[{"@value":"Geological Survey of Canada, Ottawa, ON K1A 0E8, Canada;"}]},{"@id":"https://cir.nii.ac.jp/crid/1380011145602865667","@type":"Researcher","foaf:name":[{"@value":"Ulf Söderlund"}],"jpcoar:affiliationName":[{"@value":"Department of Geology, Lund University, Lund 223 62, Sweden;"},{"@value":"Department of Geosciences, Swedish Museum of Natural History, Stockholm 104 05, Sweden;"}]},{"@id":"https://cir.nii.ac.jp/crid/1380011145602865668","@type":"Researcher","foaf:name":[{"@value":"Michiel O. de Kock"}],"jpcoar:affiliationName":[{"@value":"Department of Geology, University of Johannesburg, Auckland Park 2006, South Africa;"}]},{"@id":"https://cir.nii.ac.jp/crid/1380011145602865664","@type":"Researcher","foaf:name":[{"@value":"Emilie R. Larsson"}],"jpcoar:affiliationName":[{"@value":"Department of Geology, Lund University, Lund 223 62, Sweden;"}]},{"@id":"https://cir.nii.ac.jp/crid/1380011145602865666","@type":"Researcher","foaf:name":[{"@value":"Andrey Bekker"}],"jpcoar:affiliationName":[{"@value":"Department of Geology, University of Johannesburg, Auckland Park 2006, South Africa;"},{"@value":"Department of Earth Sciences, University of California, Riverside, CA 92521"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"00278424"},{"@type":"EISSN","@value":"10916490"}],"prism:publicationName":[{"@value":"Proceedings of the National Academy of Sciences"}],"dc:publisher":[{"@value":"Proceedings of the National Academy of Sciences"}],"prism:publicationDate":"2017-02-06","prism:volume":"114","prism:number":"8","prism:startingPage":"1811","prism:endingPage":"1816"},"reviewed":"false","dc:rights":["http://www.pnas.org/site/misc/userlicense.xhtml"],"url":[{"@id":"http://www.pnas.org/syndication/doi/10.1073/pnas.1608824114"},{"@id":"https://pnas.org/doi/pdf/10.1073/pnas.1608824114"}],"createdAt":"2017-02-07","modifiedAt":"2022-04-13","relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1360005518359088512","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Isolation of an archaeon at the prokaryote–eukaryote interface"}]},{"@id":"https://cir.nii.ac.jp/crid/1360017280628431104","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"The nitrate-limited freshwater environment of the late Paleoproterozoic Embury Lake Formation, Flin Flon belt, 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