{"created":"2023-07-25T11:00:10.833229+00:00","id":1964,"links":{},"metadata":{"_buckets":{"deposit":"4136708e-62a8-4098-b986-5a9fc7c01e4b"},"_deposit":{"created_by":4,"id":"1964","owners":[4],"pid":{"revision_id":0,"type":"depid","value":"1964"},"status":"published"},"_oai":{"id":"oai:nipr.repo.nii.ac.jp:00001964","sets":["1:356:395"]},"author_link":["1584","58347"],"item_1_biblio_info_14":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1986-07","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"205","bibliographicPageStart":"181","bibliographicVolumeNumber":"41","bibliographic_titles":[{"bibliographic_title":"Memoirs of National Institute of Polar Research. Special issue"}]}]},"item_1_creator_8":{"attribute_name":"著者名(英)","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Nagahara,Hiroko","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Ozawa,Kazuhito","creatorNameLang":"en"}],"nameIdentifiers":[{}]}]},"item_1_description_1":{"attribute_name":"ページ属性","attribute_value_mlt":[{"subitem_description":"P(論文)","subitem_description_type":"Other"}]},"item_1_description_12":{"attribute_name":"抄録(英)","attribute_value_mlt":[{"subitem_description":"Yamato-791493 is a unique meteorite which is similar to Lodran, an associated \"stony-iron\" meteorite, but it differs from Lodran in that it contains plagioclase. Y-791493 consists of small spinel, large euhedral to subhedral olivine and orthopyroxene, anhedral clinopyroxene, metallic iron-nickel, troilite, plagioclase, and merrillite. Textural and petrofabric studies show that Y-791493 was not formed by an accumulation of crystals on the stagnant floor of a reservoir but was formed in the presence of strong magmatic laminar flow. Y-791493 cooled continuously from high temperature (above 1200℃) to low temperature (below 500℃) without any thermal interruption. The estimated cooling rate from 800 to 600℃ is (10)^3℃/Ma. Orthopyroxene and clinopyroxene show compositional zoning formed during cooling from about 1100 to 800℃. The composition of spinel shows a strong size dependence due to differences in crystallization (Al, Cr, and Ti) and in subsolidus equilibration (Mg and Fe). Similarity in major element abundances to H-chondrites suggests that the precursor material of Y-791493 was similar to the average H-chondrite but was more enriched in Mn and P. Y-791493 was formed by partial melting of the precursor material, followed by crystallization of major portion with minor loss of partial melt under more reduced conditions than the average H-chondrite. From the bulk major chemical and mineralogical similarities, it is suggested that Y-791493 has an intimate genetical relationship to the Lodran, Acapulco, and ALH-77081 meteorites, and probably to \"winonaites\", Brachina, and silicates in IAB and IIICD irons. These meteorites were formed from a common precursor material in the same parental body, but by different degree of melting. Lodran is a product of the largest degree of melting followed by Y-791493 and Acapulco or ALH-77081.","subitem_description_type":"Other"}]},"item_1_source_id_13":{"attribute_name":"雑誌書誌ID","attribute_value_mlt":[{"subitem_source_identifier":"AA00733561","subitem_source_identifier_type":"NCID"}]},"item_1_text_10":{"attribute_name":"著者所属(英)","attribute_value_mlt":[{"subitem_text_language":"en","subitem_text_value":"Geological Institute, University of Tokyo/Geological Institute, University of Tokyo"}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"1986-07-01"}],"displaytype":"detail","filename":"KJ00000012518.pdf","filesize":[{"value":"3.0 MB"}],"format":"application/pdf","licensetype":"license_6","mimetype":"application/pdf","url":{"label":"KJ00000012518","url":"https://nipr.repo.nii.ac.jp/record/1964/files/KJ00000012518.pdf"},"version_id":"18745edf-7a7f-4d81-8195-2e642a24a57e"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"eng"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"departmental bulletin paper","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"Petrology of Yamato-791493, lodranite: Melting, crystallization, cooling history, and relationship to other meteorites","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Petrology of Yamato-791493, lodranite: Melting, crystallization, cooling history, and relationship to other meteorites","subitem_title_language":"en"}]},"item_type_id":"1","owner":"4","path":["395"],"pubdate":{"attribute_name":"公開日","attribute_value":"1986-07-01"},"publish_date":"1986-07-01","publish_status":"0","recid":"1964","relation_version_is_last":true,"title":["Petrology of Yamato-791493, lodranite: Melting, crystallization, cooling history, and relationship to other meteorites"],"weko_creator_id":"4","weko_shared_id":4},"updated":"2023-07-25T13:48:03.593280+00:00"}