{"created":"2023-07-25T10:59:56.978423+00:00","id":1723,"links":{},"metadata":{"_buckets":{"deposit":"321de844-16d7-4ad8-88c2-726682a9c585"},"_deposit":{"created_by":4,"id":"1723","owners":[4],"pid":{"revision_id":0,"type":"depid","value":"1723"},"status":"published"},"_oai":{"id":"oai:nipr.repo.nii.ac.jp:00001723","sets":["1:356:389"]},"author_link":["578","16340","1068"],"item_1_biblio_info_14":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1984-12","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"199","bibliographicPageStart":"184","bibliographicVolumeNumber":"35","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":"Kojima, Hideyasu","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Ikeda, Yukio","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Yanai, Keizo","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":"Seven carbonaceous chondrites, Yamato-791717 (CO3), -74135 (CO3), -793321 (CM), -791198 (CM), -790003 (CM), Belgica-7904 (CM) and Y-791824 (CM) have been studied petrographically and petrologically to characterize their state of alteration. The degree of alteration of these specimens varies widely, from unaltered Y-791717 to intensely altered Y-791824. Petrographical criteria and chemical compositions, especially the Si-Mg-Fe ratios of chondrules and matrices, can be used to define the degree of alteration of CM chondrites. The degree of alteration is classified into four stages, as follows : (1) Unaltered stage, (2) Weakly-altered stage, (3) Moderately altered stage and (4) Intensely altered stage. No CM chondrite belonging to stage 1 has been found. Y-793321 and -791198 are altered to stage 2. Y-790003 belongs to stage 3,and the alteration degree of Y-791824 lies between stage 3 and 4. B-7904 appears to have suffered thermal metamorphism after being intensely altered.","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":"National Institute of Polar Research"},{"subitem_text_language":"en","subitem_text_value":"Department of Earth Sciences, Faculty of Science, Ibaraki University"},{"subitem_text_language":"en","subitem_text_value":"National Institute of Polar Research"}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"1984-12-01"}],"displaytype":"detail","filename":"KJ00000012355.pdf","filesize":[{"value":"1.8 MB"}],"format":"application/pdf","licensetype":"license_6","mimetype":"application/pdf","url":{"label":"KJ00000012355","url":"https://nipr.repo.nii.ac.jp/record/1723/files/KJ00000012355.pdf"},"version_id":"e45aab4b-8c8d-4307-af90-f714f733d817"}]},"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":"The alteration of chondrules and matrices in new Antarctic carbonaceous chondrites","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"The alteration of chondrules and matrices in new Antarctic carbonaceous chondrites","subitem_title_language":"en"}]},"item_type_id":"1","owner":"4","path":["389"],"pubdate":{"attribute_name":"公開日","attribute_value":"1984-12-01"},"publish_date":"1984-12-01","publish_status":"0","recid":"1723","relation_version_is_last":true,"title":["The alteration of chondrules and matrices in new Antarctic carbonaceous chondrites"],"weko_creator_id":"4","weko_shared_id":4},"updated":"2023-07-25T13:53:01.875989+00:00"}