{"created":"2024-04-08T02:26:52.127866+00:00","id":6574,"links":{},"metadata":{"_buckets":{"deposit":"a95c54fb-5306-4d07-bae9-81535b29161f"},"_deposit":{"created_by":10,"id":"6574","owners":[10],"pid":{"revision_id":0,"type":"depid","value":"6574"},"status":"published"},"_oai":{"id":"oai:nied-repo.bosai.go.jp:00006574","sets":[]},"author_link":[],"item_10001_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2024-02-08","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"2","bibliographicPageEnd":"196","bibliographicPageStart":"167","bibliographicVolumeNumber":"15","bibliographic_titles":[{"bibliographic_title":"Solid Earth","bibliographic_titleLang":"en"}]}]},"item_10001_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"Petit-spot volcanoes, occurring due to plate flexure, have been reported globally. As the petit-spot melts ascend from the asthenosphere, they provide crucial information of the lithosphere-asthenosphere boundary. Herein, we examined the lava outcrops of six monogenetic volcanoes formed by petit-spot volcanism in the western Pacific. We then analyzed the 40Ar/39Ar ages, major and trace element compositions, and Sr, Nd, and Pb isotopic ratios of the petit-spot basalts. The 40Ar/39Ar ages of two monogenetic volcanoes were ca. 2.6Ma (million years ago) and ca. 0Ma. The isotopic compositions of the western Pacific petit-spot basalts suggest geochemically similar melting sources. They were likely derived from a mixture of high-μ (HIMU) mantle-like and enriched mantle (EM)-1-like components related to carbonatitic/carbonated materials and recycled crustal components. The characteristic trace element composition (i.e., Zr, Hf, and Ti depletions) of the western Pacific petit-spot magmas could be explained by the partial melting of ĝ1/45% crust bearing garnet lherzolite, with 10% carbonatite flux to a given mass of the source, as implied by a mass-balance-based melting model. This result confirms the involvement of carbonatite melt and recycled crust in the source of petit-spot melts. It provides insights into the genesis of tectonic-induced volcanoes, including the Hawaiian North Arch and Samoan petit-spot-like rejuvenated volcanoes that have a similar trace element composition to petit-spot basalts.","subitem_description_language":"en","subitem_description_type":"Other"}]},"item_10001_relation_14":{"attribute_name":"DOI","attribute_value_mlt":[{"subitem_relation_type_id":{"subitem_relation_type_id_text":"10.5194/se-15-167-2024"}}]},"item_10001_source_id_9":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"1869-9529","subitem_source_identifier_type":"EISSN"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Kazuto Mikuni","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Naoto Hirano","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Shiki MacHida","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Hirochika Sumino","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Norikatsu Akizawa","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Akihiro Tamura","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Tomoaki Morishita","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Yasuhiro Kato","creatorNameLang":"en"}]}]},"item_title":"Contribution of carbonatite and recycled oceanic crust to petit-spot lavas on the western Pacific Plate","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Contribution of carbonatite and recycled oceanic crust to petit-spot lavas on the western Pacific Plate","subitem_title_language":"en"}]},"item_type_id":"40001","owner":"10","path":["1670839190650"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2024-04-08"},"publish_date":"2024-04-08","publish_status":"0","recid":"6574","relation_version_is_last":true,"title":["Contribution of carbonatite and recycled oceanic crust to petit-spot lavas on the western Pacific Plate"],"weko_creator_id":"10","weko_shared_id":-1},"updated":"2024-04-08T02:26:56.525691+00:00"}