{"created":"2023-07-25T10:59:40.073494+00:00","id":1386,"links":{},"metadata":{"_buckets":{"deposit":"2529030f-9b50-40d3-b021-2b4b8855f8cf"},"_deposit":{"created_by":4,"id":"1386","owners":[4],"pid":{"revision_id":0,"type":"depid","value":"1386"},"status":"published"},"_oai":{"id":"oai:nipr.repo.nii.ac.jp:00001386","sets":["1:356:379"]},"author_link":["1076"],"item_1_biblio_info_14":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1982-12","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"161","bibliographicPageStart":"153","bibliographicVolumeNumber":"25","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":"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 of noble gases and isotopic compositions of He, Ne and Ar were determined for small Yamato chondrites. Five of the ten specimens studied showed high (^<22>(Ne)/^<21>(Ne))_c ratios, suggesting hard cosmic-ray irradiation in small bodies in space or near surfaces of meteoroids. Among them, Y-74447 (H) shows a cosmogenic ^<22>(Ne)/^<21>(Ne) ratio as high as 1.306±0.040,which suggests a very hard cosmic-ray irradiation in a small body. The preatmospheric size of this chondrite may be as small as inferred from its recovered mass (14.3g). No significant difference was found in cosmic-ray irradiation history between antarctic and non-antarctic chondrites. Cosmic-ray irradiation ages and U/Th-He and K-Ar ages are given. While Y-74138(H) was found to contain appreciable amounts of trapped, solar-type gases, Y-74060(H) shows complete loss of radiogenic ^4(He) and radiogenic ^<40>(Ar) as low as found in shocked L chondrites. The Y-74060 chondrite is one of those rare cases in which H chondrites lost radiogenic gases by shock or other metamorphic events. Trapped planetary gases are discussed in relation with petrologic types.","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 Earth Sciences, Faculty of Science, Yamagata University"}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"1982-12-01"}],"displaytype":"detail","filename":"KJ00000012020.pdf","filesize":[{"value":"1.5 MB"}],"format":"application/pdf","licensetype":"license_6","mimetype":"application/pdf","url":{"url":"https://nipr.repo.nii.ac.jp/record/1386/files/KJ00000012020.pdf"},"version_id":"47809d83-ea19-4f75-b629-b5bcf81d4759"}]},"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":"Noble gases in ten, small Yamato chondrites","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Noble gases in ten, small Yamato chondrites","subitem_title_language":"en"}]},"item_type_id":"1","owner":"4","path":["379"],"pubdate":{"attribute_name":"公開日","attribute_value":"1982-12-01"},"publish_date":"1982-12-01","publish_status":"0","recid":"1386","relation_version_is_last":true,"title":["Noble gases in ten, small Yamato chondrites"],"weko_creator_id":"4","weko_shared_id":4},"updated":"2023-07-25T13:51:09.176637+00:00"}