{"created":"2023-05-15T14:42:43.291147+00:00","id":58538,"links":{},"metadata":{"_buckets":{"deposit":"4270989d-5eff-40fc-9f93-9b4683400852"},"_deposit":{"created_by":1,"id":"58538","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"58538"},"status":"published"},"_oai":{"id":"oai:repo.qst.go.jp:00058538","sets":["11"]},"author_link":["585292","585282","585288","585287","585289","585291","585286","585284","585285","585290","585283"],"item_10004_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2015-01","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"300","bibliographicPageStart":"289","bibliographic_titles":[{"bibliographic_title":"Subseafloor Biosphere Linked to Hydrothermal Systems"}]}]},"item_10004_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"Ages of sulfide and sulfate mineralized samples collected from active hydrothermal fields\nin the Southern Mariana Trough were determined. In addition to samples collected from\nactive and inactive chimneys, and sulfide breccia during dive expeditions, massive sulfide\nores obtained by shallow drilling were studied. We applied 230Th/234U radioactive disequilibrium\ndating technique to sulfide minerals, as the collected mineralized samples were\ndominated by marcasite, pyrite and sphalerite. In addition, electron spin resonance (ESR)\ndating was applied to a few barite-rich samples, for comparison purpose. A laser step\nheating 39Ar-40Ar dating of the basement volcanic rock samples was also attempted.\nSulfide chimneys and ores collected from a hydrothermal mound located beside the\nspreading axis range in age from <100 to 3,520 years old, without notable hiatus. The\ngrowth rate of the massive sulfide ore body is calculated to be 0.12–1.5 mm year 1 based on\nresults of the core samples. This age range is comparable for those previously reported for\ngiant hydrothermal mounds of a few 100 m in diameter. These results suggest >1,000 years\nof continuous hydrothermal activity would be necessary for the formation of a massive\nsulfide deposit.\nSulfide chimneys and breccia collected from two hydrothermal fields located on an offaxis\nknoll are up to 9,000 years old. Sulfide breccia collected from an active site on the\nspreading axis are 2,740 and 7,190 years old. Geophysical studies provided evidence for\nabundant magma supply in the Southern Mariana Trough, which would have fueled\nhydrothermal activities in this area for long duration. While geophysical evidence for\ncrustal velocity anomaly below the off-axis knoll suggests mineralization at the off-axis\nsites is considered to be in the late-stage of the hydrothermal activity, the discrete ages from\nthe on-axis site might reflect episodic hydrothermal activities related to diking events\nproposed by geophysical and geological studies.","subitem_description_type":"Abstract"}]},"item_10004_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"Springer"}]},"item_10004_relation_10":{"attribute_name":"ISBN","attribute_value_mlt":[{"subitem_relation_type_id":{"subitem_relation_type_id_text":" ISBN4431548653, ","subitem_relation_type_select":"ISBN"}}]},"item_10004_relation_17":{"attribute_name":"関連サイト","attribute_value_mlt":[{"subitem_relation_name":[{"subitem_relation_name_text":"http://download-v2.springer.com/static/pdf/213/chp%253A10.1007%252F978-4-431-54865-2_23.pdf?token2=exp=1430356071~acl=%2Fstatic%2Fpdf%2F213%2Fchp%25253A10.1007%25252F978-4-431-54865-2_23.pdf*~hmac=e2986c924f497c3f5954e13e9ffbc9229710798a5c3ef73043be70ac247f9381"}],"subitem_relation_type_id":{"subitem_relation_type_id_text":"http://download-v2.springer.com/static/pdf/213/chp%253A10.1007%252F978-4-431-54865-2_23.pdf?token2=exp=1430356071~acl=%2Fstatic%2Fpdf%2F213%2Fchp%25253A10.1007%25252F978-4-431-54865-2_23.pdf*~hmac=e2986c924f497c3f5954e13e9ffbc9229710798a5c3ef73043be70ac247f9381","subitem_relation_type_select":"URI"}}]},"item_access_right":{"attribute_name":"アクセス権","attribute_value_mlt":[{"subitem_access_right":"metadata only access","subitem_access_right_uri":"http://purl.org/coar/access_right/c_14cb"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Ishibashi, Jun-ichiro"}],"nameIdentifiers":[{"nameIdentifier":"585282","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Shimada, Kazuhiko"}],"nameIdentifiers":[{"nameIdentifier":"585283","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Sato, Fumihiro"}],"nameIdentifiers":[{"nameIdentifier":"585284","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Uchida, Ai"}],"nameIdentifiers":[{"nameIdentifier":"585285","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Shin, Toyoda"}],"nameIdentifiers":[{"nameIdentifier":"585286","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Takamasa, Asako"}],"nameIdentifiers":[{"nameIdentifier":"585287","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Shun’ichi, Nakai"}],"nameIdentifiers":[{"nameIdentifier":"585288","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Hyodo, Hironobu"}],"nameIdentifiers":[{"nameIdentifier":"585289","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Sato, Keiko"}],"nameIdentifiers":[{"nameIdentifier":"585290","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Kumagai, Hidenori"}],"nameIdentifiers":[{"nameIdentifier":"585291","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"賞雅 朝子","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"585292","nameIdentifierScheme":"WEKO"}]}]},"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":"article","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"Dating of Hydrothermal Mineralization in Active Hydrothermal Fields in the Southern Mariana Trough","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Dating of Hydrothermal Mineralization in Active Hydrothermal Fields in the Southern Mariana Trough"}]},"item_type_id":"10004","owner":"1","path":["11"],"pubdate":{"attribute_name":"公開日","attribute_value":"2015-04-30"},"publish_date":"2015-04-30","publish_status":"0","recid":"58538","relation_version_is_last":true,"title":["Dating of Hydrothermal Mineralization in Active Hydrothermal Fields in the Southern Mariana Trough"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-05-15T22:14:54.810233+00:00"}