{"@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/1363670320568588544.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1016/j.apgeochem.2005.12.003"}},{"identifier":{"@type":"URI","@value":"https://api.elsevier.com/content/article/PII:S0883292706000096?httpAccept=text/xml"}},{"identifier":{"@type":"URI","@value":"https://api.elsevier.com/content/article/PII:S0883292706000096?httpAccept=text/plain"}}],"dc:title":[{"@value":"Application of Sr isotopes to geochemical mapping and provenance analysis: The case of Aichi Prefecture, central Japan"}],"description":[{"notation":[{"@value":"Abstract   Geochemical maps expressing areal distributions of chemical elements in the earth’s land surface have been published in several countries in relation to various global environment issues. The authors have applied a radiogenic isotope ratio,  87 Sr/ 86 Sr, to geochemical mapping in order to understand the geological origin, transportation and dispersion system of chemical elements in the earth’s land surface. The Sr isotope ratio is a useful tracer for distinguishing the geological origin of surficial deposits, especially in areas where surface exposure of bedrocks is low, because it is not significantly altered by the processes of weathering and transportation. Most bedrocks in the Japanese islands are covered by plants, soils and urban areas. In this study, 142 of 1219 stream sediments ( 87 Sr/ 86 Sr values, and the above-average presence of granitic rocks, in the study area compared with the surface exposure of the Japan Arc. The first factor controlling the distribution of Sr isotope ratios is the bedrock distributed around the sampling points. Regional variation in the  87 Sr/ 86 Sr value shows that it is higher in the western and southeastern parts, where sedimentary rocks and metamorphic rocks are distributed, and that it is lower mainly in the central part, where granitic rocks are distributed. The  87 Rb/ 86 Sr– 87 Sr/ 86 Sr plot for stream sediments more clearly reveals the differences and similarities of bedrocks. In some locations, the distribution of Sr isotope ratios does not correspond to that of bedrocks on the geological map. One reason is the existence of unmapped bedrock, for example, small intrusive masses of granite. The other is fluvial transportation and dispersion. The distribution of the isotope ratios suggests that some stream sediments include surficial deposits from a few km upstream. Application of the Sr isotope ratio to geochemical mapping is useful for revealing both the distribution of unexposed bedrocks and the transportation of surficial deposits. Information on unexposed bedrocks will be expected to contribute to the improvement of geological mapping."}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1383670320568588549","@type":"Researcher","foaf:name":[{"@value":"Yoshihiro Asahara"}]},{"@id":"https://cir.nii.ac.jp/crid/1383670320568588547","@type":"Researcher","foaf:name":[{"@value":"Hiroko Ishiguro"}]},{"@id":"https://cir.nii.ac.jp/crid/1383670320568588548","@type":"Researcher","foaf:name":[{"@value":"Tsuyoshi Tanaka"}]},{"@id":"https://cir.nii.ac.jp/crid/1383670320568588545","@type":"Researcher","foaf:name":[{"@value":"Koshi Yamamoto"}]},{"@id":"https://cir.nii.ac.jp/crid/1383670320568588544","@type":"Researcher","foaf:name":[{"@value":"Koichi Mimura"}]},{"@id":"https://cir.nii.ac.jp/crid/1383670320568588550","@type":"Researcher","foaf:name":[{"@value":"Masayo Minami"}]},{"@id":"https://cir.nii.ac.jp/crid/1383670320568588546","@type":"Researcher","foaf:name":[{"@value":"Hidekazu Yoshida"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"08832927"}],"prism:publicationName":[{"@value":"Applied Geochemistry"}],"dc:publisher":[{"@value":"Elsevier BV"}],"prism:publicationDate":"2006-03","prism:volume":"21","prism:number":"3","prism:startingPage":"419","prism:endingPage":"436"},"reviewed":"false","dc:rights":["https://www.elsevier.com/tdm/userlicense/1.0/","https://www.elsevier.com/legal/tdmrep-license"],"url":[{"@id":"https://api.elsevier.com/content/article/PII:S0883292706000096?httpAccept=text/xml"},{"@id":"https://api.elsevier.com/content/article/PII:S0883292706000096?httpAccept=text/plain"}],"createdAt":"2006-02-20","modifiedAt":"2025-10-10","relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1360002215892378112","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Provenance of terrigenous detritus of the surface sediments in the Bering and Chukchi Seas as derived 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paleoenvironmental evolution of the Bab Basin at the southern Neo‐Tethys margin: Response to global carbon‐cycle perturbations across Ocean Anoxic Event 1a"}]},{"@id":"https://cir.nii.ac.jp/crid/1360848656160364288","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Episyenite formation in the Toki granite, central Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1361131417187696384","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Geographic variation of Sr and S isotope ratios in bottled waters in Japan and sources of Sr and S"}]},{"@id":"https://cir.nii.ac.jp/crid/1361418521423308032","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Multi‐approach characterization of shallow‐water carbonates off Minamitorishima and their depositional 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