{"created":"2023-07-25T11:03:07.736795+00:00","id":5951,"links":{},"metadata":{"_buckets":{"deposit":"910fc138-5cbd-471e-b999-482ffdf19d4d"},"_deposit":{"created_by":4,"id":"5951","owners":[4],"pid":{"revision_id":0,"type":"depid","value":"5951"},"status":"published"},"_oai":{"id":"oai:nipr.repo.nii.ac.jp:00005951","sets":["1259:1260:1264:773:776"]},"author_link":["9873"],"item_1_biblio_info_14":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1999-03","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"167","bibliographicPageStart":"151","bibliographicVolumeNumber":"12","bibliographic_titles":[{"bibliographic_title":"Antarctic meteorite research"}]}]},"item_1_creator_8":{"attribute_name":"著者名(英)","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Mikouchi, Takashi","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 (Y)-793169 and Asuka (A)-881757 are unbrecciated lunar mare meteorites that contain shocked plagioclase as a main constituent phase. Plagioclase in Y-793169 is composed of fine-grained microlitic grains that preserve the overall optical orientation of the original grain. Small vesicles are also observed within plagioclase grains. Plagioclase shows chemical zoning from the An-rich core (An_<96>) to the An-poor rim (An_<85>). These observations suggest that plagioclase in Y-793169 recrystallized from a diaplectic glass by thermal annealing as the heating experiment of a diaplectic plagioclase suggests. The thermal annealing event might occur sometime later than 750Ma that has been derived from the K-Ar study of plagioclase. A-881757 plagioclase has completely transformed into an isotropic glass similar to \"maskelynite\" in Martian meteorites. Chemical zoning of plagioclase is well preserved, showing a systematic change of composition from the An-rich core (An_<95>) to the slightly An-poor rim (An_<90>). Plagioclase glass partly converts to crystalline (optically single crystal) plagioclase near the fusion crust due to reheating during the atmospheric entry. All of these observations suggest that plagioclase glass in A-881757 is probably a diaplectic glass. Unlike Y-793169,plagioclase glass in A-881757 has not been modified by later thermal events, which is consistent with the old ^<40>Ar-^<39>Ar age (3.8Ga) of A-881757 plagioclase glass. Thus, Y-793169 and A-881757 contained (A-881757 still contains) a diaplectic plagioclase glass that was shock-induced perhaps during the late heavy bombardment of the Moon as their old crystallization ages (3.8-3.9Ga) indicate.","subitem_description_type":"Other"}]},"item_1_identifier_registration":{"attribute_name":"ID登録","attribute_value_mlt":[{"subitem_identifier_reg_text":"10.15094/00005951","subitem_identifier_reg_type":"JaLC"}]},"item_1_publisher_22":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"National Institute of Polar Research"}]},"item_1_source_id_13":{"attribute_name":"雑誌書誌ID","attribute_value_mlt":[{"subitem_source_identifier":"AA11182426","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":"Mineralogical Institute, Graduate School of Science, 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":"1999-03-01"}],"displaytype":"detail","filename":"KJ00000040943.pdf","filesize":[{"value":"2.1 MB"}],"format":"application/pdf","licensetype":"license_6","mimetype":"application/pdf","url":{"label":"KJ00000040943","url":"https://nipr.repo.nii.ac.jp/record/5951/files/KJ00000040943.pdf"},"version_id":"31063a36-d3ab-4e00-a51c-667853a66672"}]},"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":"Shocked plagioclase in the lunar meteorites Yamato-793169 and Asuka-881757: Implications for their shock and thermal histories","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Shocked plagioclase in the lunar meteorites Yamato-793169 and Asuka-881757: Implications for their shock and thermal histories"}]},"item_type_id":"1","owner":"4","path":["776"],"pubdate":{"attribute_name":"公開日","attribute_value":"1999-03-01"},"publish_date":"1999-03-01","publish_status":"0","recid":"5951","relation_version_is_last":true,"title":["Shocked plagioclase in the lunar meteorites Yamato-793169 and Asuka-881757: Implications for their shock and thermal histories"],"weko_creator_id":"4","weko_shared_id":4},"updated":"2023-07-25T12:08:14.809877+00:00"}