{"created":"2023-04-27T04:12:44.365103+00:00","id":6082,"links":{},"metadata":{"_buckets":{"deposit":"45c41261-a661-4bc5-bb0d-1443d0bf8ea2"},"_deposit":{"id":"6082","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"6082"},"status":"published"},"_oai":{"id":"oai:nied-repo.bosai.go.jp:00006082","sets":[]},"author_link":[],"item_10001_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2021","bibliographicIssueDateType":"Issued"},"bibliographicPageStart":"176","bibliographicVolumeNumber":"68","bibliographic_titles":[{"bibliographic_title":"日本地球化学会年会要旨集","bibliographic_titleLang":"ja"},{"bibliographic_title":"Abstracts of Annual Meeting of the Geochemical Society of Japan","bibliographic_titleLang":"en"}]}]},"item_10001_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"プチスポット火山は、溶岩とその溶岩が取り込んだ捕獲物質から、アセノスフェア-リソスフェア境界に存在し得るメルトや沈み込み前の海洋プレートの化学組成について多くの新見解を与えている。一方、希ガス組成は、急冷ガラスが保持する同位体組成に限られている。そこで、我々はSato et al. (2018)で新たに報告されたカンラン石斑晶を含む、プチスポット溶岩の希ガスに着目し、プチスポット初生マグマの起源を探る。分析試料としてYK20-14S航海でSite Aから採取した溶岩の急冷ガラス、YK14-05航海でSite Cから採取した溶岩の急冷ガラスとカンラン石斑晶を、段階加熱法で希ガス同位体組成を測定した。カンラン石斑晶の³He/⁴He比は、8.4から9.3 Raと均質な値を示し、カンラン石斑晶のHe濃度は平均的なMORBガラスに匹敵する濃度を持つ。その他、希ガス組成に加え、先行研究で示された放射年代、化学組成、同位体組成を加え、北日本に沈み込む太平洋プレート下マグマの特徴を考察する。","subitem_description_language":"ja","subitem_description_type":"Other"}]},"item_10001_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"一般社団法人日本地球化学会","subitem_publisher_language":"ja"},{"subitem_publisher":"GEOCHEMICAL SOCIETY OF JAPAN","subitem_publisher_language":"en"}]},"item_10001_relation_14":{"attribute_name":"DOI","attribute_value_mlt":[{"subitem_relation_type_id":{"subitem_relation_type_id_text":"10.14862/geochemproc.68.0_176"}}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"中尾 魁史","creatorNameLang":"ja"},{"creatorName":"Nakao Kaishi","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"平野 直人","creatorNameLang":"ja"},{"creatorName":"Hirano Naoto","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"角野 浩史","creatorNameLang":"ja"},{"creatorName":"Sumino Hirochika","creatorNameLang":"en"}]}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"jpn"}]},"item_title":"プチスポット溶岩の希ガス同位体組成から太平洋プレート下マグマの起源を探る","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"プチスポット溶岩の希ガス同位体組成から太平洋プレート下マグマの起源を探る","subitem_title_language":"ja"},{"subitem_title":"The origin of magma below the NW Pacific plate using noble gas isotopic composition of petit-spot lavas","subitem_title_language":"en"}]},"item_type_id":"40001","owner":"1","path":["1670839190650"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2023-04-27"},"publish_date":"2023-04-27","publish_status":"0","recid":"6082","relation_version_is_last":true,"title":["プチスポット溶岩の希ガス同位体組成から太平洋プレート下マグマの起源を探る"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-04-27T05:17:30.982505+00:00"}