{"created":"2022-01-05T02:25:17.488077+00:00","id":2001821,"links":{},"metadata":{"_buckets":{"deposit":"1a0461cb-577a-4fa8-8836-a7f4a5deec25"},"_deposit":{"created_by":17,"id":"2001821","owner":"17","owners":[17],"owners_ext":{"displayname":"図書情報係","username":"repository"},"pid":{"revision_id":0,"type":"depid","value":"2001821"},"status":"published"},"_oai":{"id":"oai:nagoya.repo.nii.ac.jp:02001821","sets":["488:489:490"]},"author_link":[],"item_1615768549627":{"attribute_name":"出版タイプ","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_970fb48d4fbd8a85","subitem_version_type":"VoR"}]},"item_1629683748249":{"attribute_name":"日付","attribute_value_mlt":[{"subitem_date_issued_datetime":"2022-01-05","subitem_date_issued_type":"Available"}]},"item_9_biblio_info_6":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2021","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"6","bibliographicPageEnd":"e33","bibliographicPageStart":"e25","bibliographicVolumeNumber":"55","bibliographic_titles":[{"bibliographic_title":"GEOCHEMICAL JOURNAL","bibliographic_titleLang":"en"}]}]},"item_9_description_4":{"attribute_name":"内容記述","attribute_value_mlt":[{"subitem_description":"Recent studies have reported slight but definite differences in Δ^′17O between the lithosphere and hydrosphere. In the present study, we precisely and accurately quantify the Δ^′17O values of geothermal H2O and mid-ocean ridge basalt (MORB) with normalization on the VSMOW-SLAP scale to further substantiate these differences and to discuss the isotopic evolution of the hydrosphere throughout the geologic time scale. With a Δ^′17O value of -60 ± 13 × 10^-6, the Δ^′17O value of MORB is comparable with that in other silicates reported in previous studies. However, the Δ^′17O value of geothermal H2O tended to decrease from +31 × 10^-6 to -51 × 10^-6, which are the usual Δ^′17O values in meteoric water and silicates, respectively, in accordance with the 18O-enrichment. These results imply an active oxygen isotope exchange between silicates and geothermal H2O under high-temperature conditions at depth. This is supported by previous studies which report the 17O-enrichment of silicate altered by hydrothermal H2O. Considering this direct evidence for depletion of 17O, we conclude that the 17O-depleted H2O has been supplied continuously to the hydrosphere. Additionally, low-temperature interaction between the silicates and H2O besides high-temperature hydrothermal interaction must be assumed to explain the observed Δ^′17O of the terrestrial hydrosphere. We conclude that the Δ^′17O of the terrestrial hydrosphere should have been variable throughout the geologic time scale owing to the various oxygen exchange interaction between the lithosphere and hydrosphere.","subitem_description_language":"en","subitem_description_type":"Abstract"}]},"item_9_publisher_32":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"日本地球化学会","subitem_publisher_language":"ja"}]},"item_9_relation_43":{"attribute_name":"関連情報","attribute_value_mlt":[{"subitem_relation_type":"isVersionOf","subitem_relation_type_id":{"subitem_relation_type_id_text":"https://doi.org/10.2343/geochemj.2.0644","subitem_relation_type_select":"DOI"}}]},"item_9_source_id_7":{"attribute_name":"収録物識別子","attribute_value_mlt":[{"subitem_source_identifier":"0016-7002","subitem_source_identifier_type":"PISSN"}]},"item_access_right":{"attribute_name":"アクセス権","attribute_value_mlt":[{"subitem_access_right":"open access","subitem_access_right_uri":"http://purl.org/coar/access_right/c_abf2"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Sambuichi, Takashi","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Tsunogai, Urumu","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Kura, Kazushige","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Nakagawa, Fumiko","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Ohba, Takeshi","creatorNameLang":"en"}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_access","date":[{"dateType":"Available","dateValue":"2022-01-05"}],"displaytype":"detail","filename":"55_2_0644.pdf","filesize":[{"value":"187 KB"}],"format":"application/pdf","url":{"objectType":"fulltext","url":"https://nagoya.repo.nii.ac.jp/record/2001821/files/55_2_0644.pdf"},"version_id":"a4b72551-b43a-4946-85ad-824542825815"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"triple oxygen isotopes","subitem_subject_scheme":"Other"},{"subitem_subject":"geothermal H2O","subitem_subject_scheme":"Other"},{"subitem_subject":"MORB","subitem_subject_scheme":"Other"},{"subitem_subject":"VSMOW-SLAP scale","subitem_subject_scheme":"Other"},{"subitem_subject":"rock-water interaction","subitem_subject_scheme":"Other"}]},"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":"journal article","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"High-precision Δ^′17O measurements of geothermal H2O and MORB on the VSMOW-SLAP scale: evidence for active oxygen exchange between the lithosphere and hydrosphere","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"High-precision Δ^′17O measurements of geothermal H2O and MORB on the VSMOW-SLAP scale: evidence for active oxygen exchange between the lithosphere and hydrosphere","subitem_title_language":"en"}]},"item_type_id":"40001","owner":"17","path":["490"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2022-01-05"},"publish_date":"2022-01-05","publish_status":"0","recid":"2001821","relation_version_is_last":true,"title":["High-precision Δ^′17O measurements of geothermal H2O and MORB on the VSMOW-SLAP scale: evidence for active oxygen exchange between the lithosphere and hydrosphere"],"weko_creator_id":"17","weko_shared_id":-1},"updated":"2023-01-16T05:11:39.794222+00:00"}