{"@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/1362262943693904128.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1126/science.1214697"}},{"identifier":{"@type":"URI","@value":"https://www.science.org/doi/pdf/10.1126/science.1214697"}}],"dc:title":[{"@value":"Lithium Isotope History of Cenozoic Seawater: Changes in Silicate Weathering and Reverse Weathering"}],"description":[{"type":"abstract","notation":[{"@value":"<jats:title>Life of Li</jats:title>\n          <jats:p>\n            Because lithium primarily exists in silicate minerals on continents, the variations of Li isotopes in marine sedimentary rocks reflect the degree of silicate weathering and formation of new sediments on the seafloor, which in turn are largely controlled by climate and tectonic forces over geologic time. By analyzing sedimentary cores from eight drill sites around the world's oceans,\n            <jats:bold>Misra and Froelich</jats:bold>\n            (p.\n            <jats:related-article xmlns:xlink=\"http://www.w3.org/1999/xlink\" ext-link-type=\"doi\" page=\"818\" related-article-type=\"in-this-issue\" vol=\"335\" xlink:href=\"10.1126/science.1214697\">818</jats:related-article>\n            , published online 26 January; see the cover; see the Perspective by\n            <jats:bold>\n              <jats:related-article xmlns:xlink=\"http://www.w3.org/1999/xlink\" ext-link-type=\"doi\" issue=\"6070\" page=\"810\" related-article-type=\"in-this-issue\" vol=\"335\" xlink:href=\"10.1126/science.1218342\">Paytan</jats:related-article>\n            </jats:bold>\n            ) assembled a 68-million-year record of the Li isotope composition of seawater. The record reveals a stepwise change in the Li isotopic ratio, suggesting that several intense episodes of tectonic uplift increased continental weathering rates and delivery of sediments to the oceans. Abrupt swings in the record at specific points in Earth's history, for example, around the time when dinosaurs became extinct, imply major changes in ocean chemistry—but their mechanisms remain enigmatic.\n          </jats:p>"}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1382262943693904129","@type":"Researcher","foaf:name":[{"@value":"Sambuddha Misra"}],"jpcoar:affiliationName":[{"@value":"Geochemistry Group, National High Magnetic Field Laboratory, and Department of Earth, Ocean and Atmospheric Sciences, Florida State University, Tallahassee, FL 32310, USA."}]},{"@id":"https://cir.nii.ac.jp/crid/1382262943693904128","@type":"Researcher","foaf:name":[{"@value":"Philip N. Froelich"}],"jpcoar:affiliationName":[{"@value":"Froelich Education Services, 3402 Cameron Chase Drive, Tallahassee, FL 32309, USA."}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"00368075"},{"@type":"EISSN","@value":"10959203"}],"prism:publicationName":[{"@value":"Science"}],"dc:publisher":[{"@value":"American Association for the Advancement of Science (AAAS)"}],"prism:publicationDate":"2012-02-17","prism:volume":"335","prism:number":"6070","prism:startingPage":"818","prism:endingPage":"823"},"reviewed":"false","url":[{"@id":"https://www.science.org/doi/pdf/10.1126/science.1214697"}],"createdAt":"2012-01-27","modifiedAt":"2024-01-10","relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1360002214350385280","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Downstream and seasonal changes of lithium isotope ratios in the Ganges‐Brahmaputra river 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