{"@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/1361131418259807872.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1038/s41467-020-15931-4"}},{"identifier":{"@type":"URI","@value":"https://www.nature.com/articles/s41467-020-15931-4.pdf"}},{"identifier":{"@type":"URI","@value":"https://www.nature.com/articles/s41467-020-15931-4"}},{"identifier":{"@type":"PMID","@value":"32332762"}}],"resourceType":"学術雑誌論文(journal article)","dc:title":[{"@value":"In-situ preservation of nitrogen-bearing organics in Noachian Martian carbonates"}],"description":[{"type":"abstract","notation":[{"@value":"<jats:title>Abstract</jats:title><jats:p>Understanding the origin of organic material on Mars is a major issue in modern planetary science. Recent robotic exploration of Martian sedimentary rocks and laboratory analyses of Martian meteorites have both reported plausible indigenous organic components. However, little is known about their origin, evolution, and preservation. Here we report that 4-billion-year-old (Ga) carbonates in Martian meteorite, Allan Hills 84001, preserve indigenous nitrogen(N)-bearing organics by developing a new technique for high-spatial resolution in situ N-chemical speciation. The organic materials were synthesized locally and/or delivered meteoritically on Mars during Noachian age. The carbonates, alteration minerals from the Martian near-surface aqueous fluid, trapped and kept the organic materials intact over long geological times. This presence of N-bearing compounds requires abiotic or possibly biotic N-fixation and ammonia storage, suggesting that early Mars had a less oxidizing environment than today.</jats:p>"}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1420564276165666304","@type":"Researcher","personIdentifier":[{"@type":"KAKEN_RESEARCHERS","@value":"60836154"},{"@type":"NRID","@value":"1000060836154"},{"@type":"NRID","@value":"9000258409578"},{"@type":"NRID","@value":"9000347188931"},{"@type":"NRID","@value":"9000347188582"},{"@type":"NRID","@value":"9000399351994"},{"@type":"NRID","@value":"9000347226804"},{"@type":"NRID","@value":"9000345249153"},{"@type":"NRID","@value":"9000370281406"},{"@type":"NRID","@value":"9000399227599"},{"@type":"NRID","@value":"9000265249755"},{"@type":"RESEARCHMAP","@value":"https://researchmap.jp/mizuhokoike"}],"foaf:name":[{"@value":"Mizuho 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LLC"}],"prism:publicationDate":"2020-04-24","prism:volume":"11","prism:number":"1","prism:startingPage":"1988"},"reviewed":"false","dcterms:accessRights":"http://purl.org/coar/access_right/c_abf2","dc:rights":["https://creativecommons.org/licenses/by/4.0","https://creativecommons.org/licenses/by/4.0"],"url":[{"@id":"https://www.nature.com/articles/s41467-020-15931-4.pdf"},{"@id":"https://www.nature.com/articles/s41467-020-15931-4"}],"createdAt":"2020-04-24","modifiedAt":"2022-12-05","foaf:topic":[{"@id":"https://cir.nii.ac.jp/all?q=550","dc:title":"550"},{"@id":"https://cir.nii.ac.jp/all?q=Science","dc:title":"Science"},{"@id":"https://cir.nii.ac.jp/all?q=Q","dc:title":"Q"},{"@id":"https://cir.nii.ac.jp/all?q=Article","dc:title":"Article"}],"project":[{"@id":"https://cir.nii.ac.jp/crid/1040000781959762048","@type":"Project","projectIdentifier":[{"@type":"KAKEN","@value":"17H06454"},{"@type":"JGN","@value":"JP17H06454"},{"@type":"URI","@value":"https://kaken.nii.ac.jp/grant/KAKENHI-ORGANIZER-17H06454/"}],"notation":[{"@language":"ja","@value":"水惑星学の創成"},{"@language":"en","@value":"Aqua planetology"}]},{"@id":"https://cir.nii.ac.jp/crid/1040000781995548928","@type":"Project","projectIdentifier":[{"@type":"KAKEN","@value":"18J02005"},{"@type":"JGN","@value":"JP18J02005"},{"@type":"URI","@value":"https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-18J02005/"}],"notation":[{"@language":"ja","@value":"同位体分析法および物理化学的知見の統合による、火星マントル脱ガス史の推定"},{"@language":"en","@value":"Estiamtion of the internal evolution of Mars"}]},{"@id":"https://cir.nii.ac.jp/crid/1040000782014029056","@type":"Project","projectIdentifier":[{"@type":"KAKEN","@value":"19H01960"},{"@type":"JGN","@value":"JP19H01960"},{"@type":"URI","@value":"https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-19H01960/"}],"notation":[{"@language":"ja","@value":"炭酸塩の揮発性元素同位体分析および化学種解析に基づく火星水環境進化の研究"},{"@language":"en","@value":"Speciation and isotope analyses of volatile elements in carbonates for the evolution of surface environment on Mars"}]},{"@id":"https://cir.nii.ac.jp/crid/1040282256936474880","@type":"Project","projectIdentifier":[{"@type":"KAKEN","@value":"17H06458"},{"@type":"JGN","@value":"JP17H06458"},{"@type":"URI","@value":"https://kaken.nii.ac.jp/grant/KAKENHI-PLANNED-17H06458/"}],"notation":[{"@language":"ja","@value":"水惑星学創成に向けた分子地球化学分析"},{"@language":"en","@value":"Molecular Geochemical Analysis for Aqua-planetology"}]},{"@id":"https://cir.nii.ac.jp/crid/1040282256936477440","@type":"Project","projectIdentifier":[{"@type":"KAKEN","@value":"17H06459"},{"@type":"JGN","@value":"JP17H06459"},{"@type":"URI","@value":"https://kaken.nii.ac.jp/grant/KAKENHI-PLANNED-17H06459/"}],"notation":[{"@language":"ja","@value":"水惑星学創成に向けた太陽系探査"},{"@language":"en","@value":"Solar System Exploration for 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