{"@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/1362825893835316096.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1029/2002jb002103"}},{"identifier":{"@type":"URI","@value":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1029%2F2002JB002103"}},{"identifier":{"@type":"URI","@value":"https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/2002JB002103"}}],"dc:title":[{"@value":"Mantle metasomatism and rapid ascent of slab components beneath island arcs: Evidence from <sup>238</sup>U‐<sup>230</sup>Th‐<sup>226</sup>Ra disequilibria of Miyakejima volcano, Izu arc, Japan"}],"description":[{"type":"abstract","notation":[{"@value":"<jats:p><jats:sup>238</jats:sup>U‐<jats:sup>230</jats:sup>Th‐<jats:sup>226</jats:sup>Ra systematics in lavas from Miyakejima volcano, Japan, are presented to estimate the timescale of magmatic processes beneath an island arc. Miyakejima volcano has four recent eruptive stages (Stages 1–4) starting >7000 BP. <jats:sup>238</jats:sup>U‐<jats:sup>230</jats:sup>Th‐<jats:sup>226</jats:sup>Ra disequilibria observed in lavas with large <jats:sup>238</jats:sup>U and <jats:sup>226</jats:sup>Ra excesses imply metasomatism of depleted mantle by fluid‐related processes. This metasomatism is also suggested by trace element and Sr‐Nd‐Pb isotopic systematics in the same lavas. In the equiline diagram, the trends for two magmatic stages (Stages 1 and 2) are regarded as two different isochrons with a common initial (<jats:sup>230</jats:sup>Th/<jats:sup>232</jats:sup>Th) ratio, although the trend for Stages 3 and 4 is a magma mixing line. Our model calculations show that slab‐derived fluids can deliver some Th and a very rapid ascent time of the slab components in the mantle wedge (< 7 kyr) is inferred. This rapid ascent can be explained by nearly instantaneous material transport in the mantle wedge by a hydrofracture model for fluid and a channel flow model for melt. Such a timescale estimate is not increased even if melting processes that enhance <jats:sup>226</jats:sup>Ra are taken into account. The age difference in the equiline diagram corresponds to the interval of individual fluid‐release events (13 kyr between Stages 1 and 2, and 5 kyr between Stages 2 and 3). Thus fluid release from the slab and subsequent magma generation occur as episodic events on a several‐kiloyear timescale.</jats:p>"}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1382825893835316224","@type":"Researcher","foaf:name":[{"@value":"Tetsuya Yokoyama"}],"jpcoar:affiliationName":[{"@value":"Pheasant Memorial Laboratory for Geochemistry and Cosmochemistry, Institute for Study of the Earth's Interior Okayama University at Misasa  Tottori‐ken Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1382825893835316097","@type":"Researcher","foaf:name":[{"@value":"Katsura Kobayashi"}],"jpcoar:affiliationName":[{"@value":"Pheasant Memorial Laboratory for Geochemistry and Cosmochemistry, Institute for Study of the Earth's Interior Okayama University at Misasa  Tottori‐ken Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1382825893835316098","@type":"Researcher","foaf:name":[{"@value":"Takeshi Kuritani"}],"jpcoar:affiliationName":[{"@value":"Pheasant Memorial Laboratory for Geochemistry and Cosmochemistry, Institute for Study of the Earth's Interior Okayama University at Misasa  Tottori‐ken Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1382825893835316096","@type":"Researcher","foaf:name":[{"@value":"Eizo Nakamura"}],"jpcoar:affiliationName":[{"@value":"Pheasant Memorial Laboratory for Geochemistry and Cosmochemistry, Institute for Study of the Earth's Interior Okayama University at Misasa  Tottori‐ken Japan"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"01480227"}],"prism:publicationName":[{"@value":"Journal of Geophysical Research: Solid Earth"}],"dc:publisher":[{"@value":"American Geophysical Union (AGU)"}],"prism:publicationDate":"2003-07","prism:volume":"108","prism:number":"B7","prism:startingPage":"2329"},"reviewed":"false","dcterms:accessRights":"http://purl.org/coar/access_right/c_abf2","dc:rights":["http://onlinelibrary.wiley.com/termsAndConditions#vor"],"url":[{"@id":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1029%2F2002JB002103"},{"@id":"https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/2002JB002103"}],"createdAt":"2003-07-10","modifiedAt":"2023-10-14","relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1360004234741653504","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Two Primary Basalt Magma Types from Northwest Rota-1 Volcano, Mariana Arc and its Mantle Diapir or Mantle Wedge Plume"}]},{"@id":"https://cir.nii.ac.jp/crid/1360013168773594880","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Hydrothermal and Magmatic System of a Volcanic Island Inferred From Magnetotellurics, Seismicity, Self‐potential, and Thermal Image: An Example of Miyakejima (Japan)"}]},{"@id":"https://cir.nii.ac.jp/crid/1360025429441614592","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Origin and Evolution of the Holocene Magmatic System at Sakurajima Volcano, Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1360283692154609792","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"<sup>40</sup>Ar/<sup>39</sup>Ar ages and zircon petrochronology for the rear arc of the Izu-Bonin-Marianas intra-oceanic subduction zone"}]},{"@id":"https://cir.nii.ac.jp/crid/1360285705096233984","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Sediment‐enriched adakitic magmas from the Daisen volcanic field, Southwest Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1360285708266539648","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Melt inclusions reveal geochemical cross‐arc variations and diversity within magma chambers feeding the Higashi‐Izu Monogenetic Volcano Field, Izu Peninsula, Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1360565165869551616","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Migrating shoshonitic magmatism tracks Izu–Bonin–Mariana intra-oceanic arc rift propagation"}]},{"@id":"https://cir.nii.ac.jp/crid/1360565167605946752","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Silicic Magmas in the Izu–Bonin Oceanic Arc and Implications for Crustal Evolution"}]},{"@id":"https://cir.nii.ac.jp/crid/1360567182004458752","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Evaluation of the applicability of acid leaching for the 238U–230Th internal isochron method"}]},{"@id":"https://cir.nii.ac.jp/crid/1360567186205261440","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Izu–Bonin Arc"}]},{"@id":"https://cir.nii.ac.jp/crid/1360584341819498624","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Compositional evolution of slab-derived fluids during ascent: implications from trace-element partition between hydrous melts and Cl-free or Cl-rich aqueous fluids"}]},{"@id":"https://cir.nii.ac.jp/crid/1360848658216746624","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Making and breaking an island arc: A new perspective from the Oligocene Kyushu‐Palau arc, Philippine Sea"}]},{"@id":"https://cir.nii.ac.jp/crid/1360848658222311168","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Evolution of Magma Plumbing System in Miyakejima Volcano: Constraints From Melting Experiments"}]},{"@id":"https://cir.nii.ac.jp/crid/1360848660450112384","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Investigating the Influence of Non‐Spectral Matrix Effects in the Determination of Twenty‐Two Trace Elements in Rock Samples by <scp>ICP</scp>‐<scp>QMS</scp>"}]},{"@id":"https://cir.nii.ac.jp/crid/1390001204155424512","@type":"Article","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"230Th/238U and 226Ra/230Th Activity Ratios in Rhyolite from Izu Arc Volcanoes"},{"@language":"ja","@value":"伊豆弧の火山から噴出した流紋岩中の<SUP>230</SUP>Th/<SUP>238</SUP>Uと<SUP>226</SUP>Ra/<SUP>230</SUP>Thの放射能強度比"}]},{"@id":"https://cir.nii.ac.jp/crid/1390299915004519040","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Molybdenum isotopic compositions in volcanic rocks from Northern Izu arc (Izu-Oshima, Niijima, and Kozushima)"}]},{"@id":"https://cir.nii.ac.jp/crid/2050025942153249792","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Evolution of the magma plumbing system of Miyakejima volcano with periodic recharge of basaltic magmas"}]}],"dataSourceIdentifier":[{"@type":"CROSSREF","@value":"10.1029/2002jb002103"},{"@type":"OPENAIRE","@value":"doi_dedup___::1f53d37ee22a011b15a431f4de222e08"},{"@type":"CROSSREF","@value":"10.1093/petrology/egr022_references_DOI_aAoDAlw2lgpufNMSkjG4Ys1k5Xk"},{"@type":"CROSSREF","@value":"10.3769/radioisotopes.58.599_references_DOI_aAoDAlw2lgpufNMSkjG4Ys1k5Xk"},{"@type":"CROSSREF","@value":"10.1186/s40623-022-01577-7_references_DOI_aAoDAlw2lgpufNMSkjG4Ys1k5Xk"},{"@type":"CROSSREF","@value":"10.1002/ggge.20176_references_DOI_aAoDAlw2lgpufNMSkjG4Ys1k5Xk"},{"@type":"CROSSREF","@value":"10.1093/petrology/egaf010_references_DOI_aAoDAlw2lgpufNMSkjG4Ys1k5Xk"},{"@type":"CROSSREF","@value":"10.1080/00206814.2017.1363675_references_DOI_aAoDAlw2lgpufNMSkjG4Ys1k5Xk"},{"@type":"CROSSREF","@value":"10.1029/2012gc004222_references_DOI_aAoDAlw2lgpufNMSkjG4Ys1k5Xk"},{"@type":"CROSSREF","@value":"10.1016/j.chemgeo.2014.12.025_references_DOI_aAoDAlw2lgpufNMSkjG4Ys1k5Xk"},{"@type":"CROSSREF","@value":"10.1093/petrology/egp017_references_DOI_aAoDAlw2lgpufNMSkjG4Ys1k5Xk"},{"@type":"CROSSREF","@value":"10.1144/goj.7_references_DOI_aAoDAlw2lgpufNMSkjG4Ys1k5Xk"},{"@type":"CROSSREF","@value":"10.1016/j.epsl.2010.03.016_references_DOI_aAoDAlw2lgpufNMSkjG4Ys1k5Xk"},{"@type":"CROSSREF","@value":"10.1029/2021jb022034_references_DOI_aAoDAlw2lgpufNMSkjG4Ys1k5Xk"},{"@type":"CROSSREF","@value":"10.1007/s00410-024-02122-3_references_DOI_aAoDAlw2lgpufNMSkjG4Ys1k5Xk"},{"@type":"CROSSREF","@value":"10.1029/2010gc003440_references_DOI_aAoDAlw2lgpufNMSkjG4Ys1k5Xk"},{"@type":"CROSSREF","@value":"10.1029/2018jb015910_references_DOI_aAoDAlw2lgpufNMSkjG4Ys1k5Xk"},{"@type":"CROSSREF","@value":"10.1111/ggr.12147_references_DOI_aAoDAlw2lgpufNMSkjG4Ys1k5Xk"},{"@type":"CROSSREF","@value":"10.2343/geochemj.gj24005_references_DOI_aAoDAlw2lgpufNMSkjG4Ys1k5Xk"}]}