{"@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/1360567182296058752.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1016/j.jvolgeores.2016.03.004"}},{"identifier":{"@type":"URI","@value":"https://api.elsevier.com/content/article/PII:S0377027316300178?httpAccept=text/xml"}},{"identifier":{"@type":"URI","@value":"https://api.elsevier.com/content/article/PII:S0377027316300178?httpAccept=text/plain"}}],"resourceType":"学術雑誌論文(journal article)","dc:title":[{"@value":"Progressive enrichment of arc magmas caused by the subduction of seamounts under Nishinoshima volcano, Izu–Bonin Arc, Japan"}],"description":[{"notation":[{"@value":"Abstract   The chemical composition of intraplate seamounts is distinct from normal seafloor material, meaning that the subduction of seamounts at a convergent margin can cause a change in the chemistry of the mantle wedge and associated arc magmas. Nishinoshima, a volcanic island in the Izu–Bonin Arc of Japan, has been erupting continuously over the past 2 years, providing an ideal opportunity to examine the effect of seamount subduction on the chemistry of arc magmas. Our research is based on the whole-rock geochemistry and the chemistry of minerals within lavas and air-fall scoria from Nishinoshima that were erupted before 1702, in 1973–1974, and in 2014. The mineral phases within the analyzed samples crystallized under hydrous conditions (H2O = 3–4 wt.%) at temperatures of 970 °C–990 °C in a shallow (3–6 km depth) magma chamber. Trace element data indicate that the recently erupted Nishinoshima volcanics are much less depleted in the high field strength elements (Nb, Ta, Zr, Hf) than other volcanics within the Izu–Bonin Arc. In addition, the level of enrichment in the Nishinoshima magmas has increased in recent years, probably due to the addition of material from HIMU-enriched (i.e., high Nb/Zr and Ta/Hf) seamounts on the Pacific Plate, which is being subducted westwards beneath the Philippine Sea Plate. This suggests that the chemistry of scoria from Nishinoshima volcano records the progressive addition of components derived from subducted seamounts."}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1380567182296058755","@type":"Researcher","foaf:name":[{"@value":"Takashi Sano"}]},{"@id":"https://cir.nii.ac.jp/crid/1380567182296058757","@type":"Researcher","foaf:name":[{"@value":"Motomaro Shirao"}]},{"@id":"https://cir.nii.ac.jp/crid/1380567182296058752","@type":"Researcher","foaf:name":[{"@value":"Kenichiro Tani"}]},{"@id":"https://cir.nii.ac.jp/crid/1380567182296058753","@type":"Researcher","foaf:name":[{"@value":"Yukiyasu Tsutsumi"}]},{"@id":"https://cir.nii.ac.jp/crid/1380567182296058754","@type":"Researcher","foaf:name":[{"@value":"Shoichi Kiyokawa"}]},{"@id":"https://cir.nii.ac.jp/crid/1380567182296058756","@type":"Researcher","foaf:name":[{"@value":"Toshitsugu Fujii"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"03770273"}],"prism:publicationName":[{"@value":"Journal of Volcanology and Geothermal Research"}],"dc:publisher":[{"@value":"Elsevier BV"}],"prism:publicationDate":"2016-06","prism:volume":"319","prism:startingPage":"52","prism:endingPage":"65"},"reviewed":"false","dc:rights":["https://www.elsevier.com/tdm/userlicense/1.0/"],"url":[{"@id":"https://api.elsevier.com/content/article/PII:S0377027316300178?httpAccept=text/xml"},{"@id":"https://api.elsevier.com/content/article/PII:S0377027316300178?httpAccept=text/plain"}],"createdAt":"2016-03-15","modifiedAt":"2019-11-02","project":[{"@id":"https://cir.nii.ac.jp/crid/1040000782243191168","@type":"Project","projectIdentifier":[{"@type":"KAKEN","@value":"25287133"},{"@type":"JGN","@value":"JP25287133"},{"@type":"URI","@value":"https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-25287133/"}],"notation":[{"@language":"ja","@value":"高精度年代測定による海洋プレート沈み込み開始過程のタイムスケールとその要因の解明"},{"@language":"en","@value":"Time scale and cause of initiation of subduction of oceanic plate"}]},{"@id":"https://cir.nii.ac.jp/crid/1040282257219898240","@type":"Project","projectIdentifier":[{"@type":"KAKEN","@value":"25287132"},{"@type":"JGN","@value":"JP25287132"},{"@type":"URI","@value":"https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-25287132/"}],"notation":[{"@language":"ja","@value":"地殻形成素過程解明に向けた微小領域高精度ジルコン年代測定の実証研究"},{"@language":"en","@value":"Geochronological study of high precision zircon microanalysis for crustal evolution"}]},{"@id":"https://cir.nii.ac.jp/crid/1040282257267131136","@type":"Project","projectIdentifier":[{"@type":"KAKEN","@value":"26302010"},{"@type":"JGN","@value":"JP26302010"},{"@type":"URI","@value":"https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-26302010/"}],"notation":[{"@language":"ja","@value":"1億年間続く巨大海台のマグマ活動"},{"@language":"en","@value":"Detection of Oceanic Plateau magmatism lasting for ~100 million years"}]}],"relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1050010293266432128","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Petrogenesis of isotopically enriched Quaternary magma with adakitic affinity associated with subduction of old lithosphere beneath central Myanmar"}]},{"@id":"https://cir.nii.ac.jp/crid/1050301927790485888","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["references"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Wet and dry basalt magma evolution at Torishima volcano, Izu-Bonin arc, Japan: the possible role of phengite in the downgoing slab"}]},{"@id":"https://cir.nii.ac.jp/crid/1360004233568314880","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Origin of the suppressed matrix effect for improved analytical performance in determination of major and trace elements in anhydrous silicate samples using 200 nm femtosecond laser ablation sector-field inductively coupled plasma mass spectrometry"}]},{"@id":"https://cir.nii.ac.jp/crid/1360009142634227072","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Trial of Chemical Composition Estimation Related to Submarine Volcano Activity Using Discolored Seawater Color Data Obtained from GCOM-C SGLI. 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