{"created":"2023-07-25T10:59:20.499083+00:00","id":969,"links":{},"metadata":{"_buckets":{"deposit":"ebd35f3d-896e-4ba3-b950-27508d87e507"},"_deposit":{"created_by":4,"id":"969","owners":[4],"pid":{"revision_id":0,"type":"depid","value":"969"},"status":"published"},"_oai":{"id":"oai:nipr.repo.nii.ac.jp:00000969","sets":["1:356:366"]},"author_link":["7996","1076"],"item_1_biblio_info_14":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1979-03","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"222","bibliographicPageStart":"207","bibliographicVolumeNumber":"12","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":"Nagao, Keisuke","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Takaoka, Nobuo","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":"Concentrations and isotopic ratios of five stable rare gases were determined in six antarctic meteorites. Yamato-74191 chondrite (L3) contains large amounts of trapped heavy rare gases. Allan Hills No. 8 and Mt. Baldr No. 1 chondrites revealed short ages for cosmic-ray exposure, and are comprised in a cluster around 4 m.y. in a histogram of exposure ages for H-chondrites. This suggests a common parent body to these two chondrites. Yamato-74013 and -74097 diogenites are in close resemblance in amounts and isotopic ratios of cosmogenic He, Ne and Ar, and thus in their cosmic-ray exposure ages. Furthermore, their exposure ages resemble Yamato-692 diogenite but differ from other diogenites known to date. This strongly suggests a parent body common to these Yamato diogenites but not to the other ones. The U/Th-He ages are found to be shorter than the K-Ar ages. This is attributed to diffusive partial loss of He. Such loss was also observed for cosmogenic ^3(He). The K-Ar ages for Allan Hills No. 8 and No. 1,Mt. Baldr No. 1 and Yamato-74191 in order of antiquity are 4.5±0.2,4.4±0.2,4.1±0.2 and 3.4±0.2 b.y., respectively. ^<80>(Kr) and ^<82>(Kr) anomalies resulting from epithermal neutron capture by Br have been found in Yamato-74191. Allan Hills No. 1 contains cosmogenic Kr the isotopic composition of which is : ^<78>(Kr)/^<80>(Kr)/^<82>(Kr)/^<83>(Kr)/^<84>(Kr)/^<86>(Kr)=0.16±0.02/0.59±0.06/0.85±0.12/=1/0.47±0.28/=0. All chondrites investigated revealed enrichment in ^<129>(Xe). Among others excess ^<129>(Xe) in Yamato-74191 amounts to 3.02×(10)^<-9>(cm)^3 STP/g. An isotopic composition of trapped Xe in Allan Hills No. 8 which is depleted in Xe was identical with that of Xe-rich chondrites such as AVCC-Xe. Relation between trapped heavy rare gases and petrologic type is discussed.","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":"Department of Physics, Faculty of Science, Osaka University"},{"subitem_text_language":"en","subitem_text_value":"Department of Physics, Faculty of Science, Osaka University"}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"1979-03-01"}],"displaytype":"detail","filename":"KJ00000011515.pdf","filesize":[{"value":"2.4 MB"}],"format":"application/pdf","licensetype":"license_6","mimetype":"application/pdf","url":{"label":"KJ00000011515","url":"https://nipr.repo.nii.ac.jp/record/969/files/KJ00000011515.pdf"},"version_id":"c68ac10e-54bf-4614-87ad-4cb67af4090d"}]},"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":"Rare Gas Studies of Antarctic Meteorites","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Rare Gas Studies of Antarctic Meteorites","subitem_title_language":"en"}]},"item_type_id":"1","owner":"4","path":["366"],"pubdate":{"attribute_name":"公開日","attribute_value":"1979-03-01"},"publish_date":"1979-03-01","publish_status":"0","recid":"969","relation_version_is_last":true,"title":["Rare Gas Studies of Antarctic Meteorites"],"weko_creator_id":"4","weko_shared_id":4},"updated":"2023-07-25T14:05:04.606317+00:00"}