{"created":"2023-07-25T10:59:48.847013+00:00","id":1565,"links":{},"metadata":{"_buckets":{"deposit":"40adb2d6-2d51-4334-b81d-f617de8d05c1"},"_deposit":{"created_by":4,"id":"1565","owners":[4],"pid":{"revision_id":0,"type":"depid","value":"1565"},"status":"published"},"_oai":{"id":"oai:nipr.repo.nii.ac.jp:00001565","sets":["1:356:384"]},"author_link":["1235"],"item_1_biblio_info_14":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1983-12","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"274","bibliographicPageStart":"259","bibliographicVolumeNumber":"30","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":"Kaneoka, Ichiro","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":"In order to examine the weathering effect on ^<40>(Ar)-^<39>(Ar) ages of Antarctic meteorites, the ^<40>(Ar)-^<39>(Ar) age patterns were compared for the outer and inner portions of two Antarctic meteorites (ALH-761,ALH-77288). The results indicate that the oxidized outer portions show anomalously old ^<40>(Ar)-^<39>(Ar) ages which exceed 4600Ma in the intermediate temperature fractions of around 800-1000℃. These old ^<40>(Ar)-^<39>(Ar) ages are accompanied by the increase of ^<36>(Ar), which is regarded to be mostly of atmospheric ^<36>(Ar). This might be explained by the incorporation of atmospheric Ar in hematite which was produced from goethite during neutron irradiation. The inner relatively fresh portions show the following plateau ages : ALH-761,64,4487±50Ma; ALH-77288,63,4497±40Ma.","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":"Geophysical Institute, Faculty 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":"1983-12-01"}],"displaytype":"detail","filename":"KJ00000012198.pdf","filesize":[{"value":"2.2 MB"}],"format":"application/pdf","licensetype":"license_6","mimetype":"application/pdf","url":{"url":"https://nipr.repo.nii.ac.jp/record/1565/files/KJ00000012198.pdf"},"version_id":"51fc448a-02ea-4cef-b3c1-20d9f94c2c03"}]},"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":"Investigation of the weathering effect on the 40Ar-39Ar ages of Antarctic meteorites","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Investigation of the weathering effect on the 40Ar-39Ar ages of Antarctic meteorites","subitem_title_language":"en"}]},"item_type_id":"1","owner":"4","path":["384"],"pubdate":{"attribute_name":"公開日","attribute_value":"1983-12-01"},"publish_date":"1983-12-01","publish_status":"0","recid":"1565","relation_version_is_last":true,"title":["Investigation of the weathering effect on the 40Ar-39Ar ages of Antarctic meteorites"],"weko_creator_id":"4","weko_shared_id":4},"updated":"2023-07-25T13:47:24.790886+00:00"}