{"@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/1390282681521521280.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.2465/jmps.170710"}},{"identifier":{"@type":"URI","@value":"https://www.jstage.jst.go.jp/article/jmps/113/2/113_170710/_pdf"}},{"identifier":{"@type":"NAID","@value":"130006733786"}}],"resourceType":"学術雑誌論文(journal article)","dc:title":[{"@language":"en","@value":"Formation of triple–layer coronas between corundum and hornblende from the Lützow–Holm Complex at Akarui Point, East Antarctica"}],"dc:language":"en","description":[{"type":"abstract","notation":[{"@language":"en","@value":"<p>Triple–layer coronas around corundum occur in the Lützow–Holm Complex at Akarui Point, East Antarctica. The monomineralic layers of green spinel, sapphirine, and plagioclase are arranged in this order from corundum to the matrix hornblende, indicative of the reaction</p><p> corundum + hornblende = green spinel + sapphirine + plagioclase + H<sub>2</sub>O–fluid.</p><p>Singular value decomposition analysis in the simplified Na<sub>2</sub>O–CaO–MgO–Al<sub>2</sub>O<sub>3</sub>–SiO<sub>2</sub>–H<sub>2</sub>O system implies that either Na<sub>2</sub>O and CaO, Na<sub>2</sub>O and MgO, or CaO and SiO<sub>2</sub> were open during the corona formation. The position of the initial boundary between corundum and hornblende coincided with the present sapphirine–plagioclase boundary, as judged from the spatial position of the brownish–green spinel in the coronas which is also present in the matrix and hornblende. The flow of Al<sub>2</sub>O<sub>3</sub> decreased outward and completely ceased at the plagioclase–hornblende boundary. This feature together with the monotonic decrease in Al content from corundum to hornblende as well as within sapphirine and plagioclase suggests that diffusion of Al<sub>2</sub>O<sub>3</sub> controlled the corona formation. The net reaction showed an increase in volume, indicating that the products were stable at lower pressures. Therefore, the corona–forming reaction took place during the decompression stage of the Lützow–Holm Complex.</p>"}],"abstractLicenseFlag":"disallow"}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1420003854341450368","@type":"Researcher","personIdentifier":[{"@type":"KAKEN_RESEARCHERS","@value":"80888719"},{"@type":"NRID","@value":"1000080888719"},{"@type":"NRID","@value":"9000406038225"},{"@type":"NRID","@value":"9000389943831"},{"@type":"NRID","@value":"9000386336756"},{"@type":"RESEARCHMAP","@value":"https://researchmap.jp/yuki-mori"}],"foaf:name":[{"@language":"en","@value":"MORI Yuki"}],"jpcoar:affiliationName":[{"@language":"en","@value":"Department of Earth and Planetary Sciences, Graduate School of Sciences, Kyushu University"}]},{"@id":"https://cir.nii.ac.jp/crid/1420564276184801280","@type":"Researcher","personIdentifier":[{"@type":"KAKEN_RESEARCHERS","@value":"40243852"},{"@type":"NRID","@value":"1000040243852"},{"@type":"NRID","@value":"9000002474730"},{"@type":"NRID","@value":"9000004617469"},{"@type":"NRID","@value":"9000391813317"},{"@type":"NRID","@value":"9000345427022"},{"@type":"NRID","@value":"9000253360925"},{"@type":"NRID","@value":"9000258414492"},{"@type":"NRID","@value":"9000005388233"},{"@type":"NRID","@value":"9000347137242"},{"@type":"NRID","@value":"9000386336758"},{"@type":"NRID","@value":"9000391837203"},{"@type":"NRID","@value":"9000347165989"},{"@type":"NRID","@value":"9000403551516"},{"@type":"NRID","@value":"9000002234165"},{"@type":"NRID","@value":"9000254151534"},{"@type":"NRID","@value":"9000389943832"},{"@type":"NRID","@value":"9000258435087"},{"@type":"NRID","@value":"9000380480372"},{"@type":"NRID","@value":"9000347137359"},{"@type":"NRID","@value":"9000386336757"},{"@type":"NRID","@value":"9000254530014"},{"@type":"NRID","@value":"9000006337967"},{"@type":"NRID","@value":"9000258413308"},{"@type":"NRID","@value":"9000283728198"},{"@type":"NRID","@value":"9000258411165"},{"@type":"NRID","@value":"9000347041717"},{"@type":"NRID","@value":"9000240048486"},{"@type":"NRID","@value":"9000258412479"},{"@type":"NRID","@value":"9000365559487"},{"@type":"NRID","@value":"9000347167406"},{"@type":"NRID","@value":"9000396140755"},{"@type":"NRID","@value":"9000002627600"},{"@type":"NRID","@value":"9000241146757"},{"@type":"NRID","@value":"9000404254974"},{"@type":"NRID","@value":"9000258416924"}],"foaf:name":[{"@language":"en","@value":"IKEDA Takeshi"}],"jpcoar:affiliationName":[{"@language":"en","@value":"Department of Earth and Planetary Sciences, Graduate School of Sciences, Kyushu University"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"13456296"},{"@type":"LISSN","@value":"13456296"},{"@type":"EISSN","@value":"13493825"}],"prism:publicationName":[{"@language":"en","@value":"Journal of Mineralogical and Petrological Sciences"},{"@language":"en","@value":"Journal of Mineralogical and Petrological Sciences"}],"dc:publisher":[{"@language":"en","@value":"Japan Association of Mineralogical Sciences"},{"@language":"ja","@value":"一般社団法人　日本鉱物科学会"}],"prism:publicationDate":"2018","prism:volume":"113","prism:number":"2","prism:startingPage":"68","prism:endingPage":"81"},"reviewed":"false","url":[{"@id":"https://www.jstage.jst.go.jp/article/jmps/113/2/113_170710/_pdf"}],"availableAt":"2018","foaf:topic":[{"@id":"https://cir.nii.ac.jp/all?q=Corona","dc:title":"Corona"},{"@id":"https://cir.nii.ac.jp/all?q=Reaction%20microstructure","dc:title":"Reaction microstructure"},{"@id":"https://cir.nii.ac.jp/all?q=Mass%20transfer","dc:title":"Mass transfer"},{"@id":"https://cir.nii.ac.jp/all?q=Volume%20change","dc:title":"Volume change"},{"@id":"https://cir.nii.ac.jp/all?q=L%C3%BCtzow%E2%80%93Holm%20Complex","dc:title":"Lützow–Holm Complex"}],"project":[{"@id":"https://cir.nii.ac.jp/crid/1040282257230930688","@type":"Project","projectIdentifier":[{"@type":"KAKEN","@value":"25400518"},{"@type":"JGN","@value":"JP25400518"},{"@type":"URI","@value":"https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-25400518/"}],"notation":[{"@language":"ja","@value":"低圧変成帯の温度圧力構造と島弧地殻のダイナミクスの解明"},{"@language":"en","@value":"Thermobaric structure of low-pressure metamorphic belts and dynamics of crust beneath island arcs"}]}],"relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1050001335813562624","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["references"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Microstructural records of multiple retrograde local H2O supplement in the pelitic gneiss, Lützow-Holm Complex at Akarui Point, East Antarctica"}]},{"@id":"https://cir.nii.ac.jp/crid/1360011143870688000","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Diffusion in coronas 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