Boron isotope compositions of antigorite–grade serpentinites in the Itoigawa–Omi area of the Hida–Gaien Belt, Japan
The antigorite–grade serpentinite and Late Paleozoic high–pressure schists are main components of a serpentinite–matrix mélange in the Itoigawa–Omi area, Hida–Gaien Belt, Japan. Based on the petrologic characteristics of the high–pressure schists, the mélange is divided into two units, namely an ‘ec...
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| Veröffentlicht in: | Journal of Mineralogical and Petrological Sciences 2019, Vol.114(6), pp.290-295 |
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| creator | YAMADA, Chinatsu TSUJIMORI, Tatsuki CHANG, Qing KIMURA, Jun–Ichi |
| description | The antigorite–grade serpentinite and Late Paleozoic high–pressure schists are main components of a serpentinite–matrix mélange in the Itoigawa–Omi area, Hida–Gaien Belt, Japan. Based on the petrologic characteristics of the high–pressure schists, the mélange is divided into two units, namely an ‘eclogitic unit’ and a ‘non–eclogitic unit’. Our preliminary in–situ boron isotope analyses of five serpentinites using a laser–ablation multiple–collector inductively–coupled–plasma mass spectrometry (LA–MC–ICPMS) found a systematic difference of boron isotopic trends among the two units in the same mélange. The ‘eclogitic unit’ serpentinites from Yunotani and Kotagi–gawa are characterized by lower δ11B value (mostly lower than +10‰), whereas the non–eclogitic unit serpentinite from Omi–gawa is higher than +10‰. Although the δ11B value of |
| doi_str_mv | 10.2465/jmps.190726 |
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Based on the petrologic characteristics of the high–pressure schists, the mélange is divided into two units, namely an ‘eclogitic unit’ and a ‘non–eclogitic unit’. Our preliminary in–situ boron isotope analyses of five serpentinites using a laser–ablation multiple–collector inductively–coupled–plasma mass spectrometry (LA–MC–ICPMS) found a systematic difference of boron isotopic trends among the two units in the same mélange. The ‘eclogitic unit’ serpentinites from Yunotani and Kotagi–gawa are characterized by lower δ11B value (mostly lower than +10‰), whereas the non–eclogitic unit serpentinite from Omi–gawa is higher than +10‰. Although the δ11B value of <0‰ was not measured from the eclogitic unit serpentinites, the relatively low δ11B values of <+10‰ might have recorded the signature of fluids released from deep subducted dehydrating slab. In contrast, the non–eclogitic unit serpentinite might have been affected by fluids released from shallower portion. Our new data confirmed the potential sensitivity of the boron isotope signature of serpentinites reflecting variation of high–pressure metamorphism.</description><identifier>ISSN: 1345-6296</identifier><identifier>EISSN: 1349-3825</identifier><identifier>DOI: 10.2465/jmps.190726</identifier><language>eng</language><publisher>Sendai: Japan Association of Mineralogical Sciences</publisher><subject>Ablation ; Antigorite serpentinite ; Boron ; Boron isotope ; Boron isotopes ; Dehydration ; Fluids ; Hida–Gaien Belt ; Isotopes ; Itoigawa–Omi area ; Laser ablation ; Lasers ; Mass spectrometry ; Mass spectroscopy ; Metamorphism ; Metamorphism (geology) ; Paleozoic ; Pressure ; Schists ; Serpentinite</subject><ispartof>Journal of Mineralogical and Petrological Sciences, 2019, Vol.114(6), pp.290-295</ispartof><rights>2019 Japan Association of Mineralogical Sciences</rights><rights>Copyright Japan Science and Technology Agency Dec 2019</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c525t-3d4c00ae39798cc2d16b55104571abae248fb87ab33ad69371d35065b115871c3</citedby><cites>FETCH-LOGICAL-c525t-3d4c00ae39798cc2d16b55104571abae248fb87ab33ad69371d35065b115871c3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,1883,4024,27923,27924,27925</link.rule.ids></links><search><creatorcontrib>YAMADA, Chinatsu</creatorcontrib><creatorcontrib>TSUJIMORI, Tatsuki</creatorcontrib><creatorcontrib>CHANG, Qing</creatorcontrib><creatorcontrib>KIMURA, Jun–Ichi</creatorcontrib><title>Boron isotope compositions of antigorite–grade serpentinites in the Itoigawa–Omi area of the Hida–Gaien Belt, Japan</title><title>Journal of Mineralogical and Petrological Sciences</title><description>The antigorite–grade serpentinite and Late Paleozoic high–pressure schists are main components of a serpentinite–matrix mélange in the Itoigawa–Omi area, Hida–Gaien Belt, Japan. Based on the petrologic characteristics of the high–pressure schists, the mélange is divided into two units, namely an ‘eclogitic unit’ and a ‘non–eclogitic unit’. Our preliminary in–situ boron isotope analyses of five serpentinites using a laser–ablation multiple–collector inductively–coupled–plasma mass spectrometry (LA–MC–ICPMS) found a systematic difference of boron isotopic trends among the two units in the same mélange. The ‘eclogitic unit’ serpentinites from Yunotani and Kotagi–gawa are characterized by lower δ11B value (mostly lower than +10‰), whereas the non–eclogitic unit serpentinite from Omi–gawa is higher than +10‰. Although the δ11B value of <0‰ was not measured from the eclogitic unit serpentinites, the relatively low δ11B values of <+10‰ might have recorded the signature of fluids released from deep subducted dehydrating slab. In contrast, the non–eclogitic unit serpentinite might have been affected by fluids released from shallower portion. Our new data confirmed the potential sensitivity of the boron isotope signature of serpentinites reflecting variation of high–pressure metamorphism.</description><subject>Ablation</subject><subject>Antigorite serpentinite</subject><subject>Boron</subject><subject>Boron isotope</subject><subject>Boron isotopes</subject><subject>Dehydration</subject><subject>Fluids</subject><subject>Hida–Gaien Belt</subject><subject>Isotopes</subject><subject>Itoigawa–Omi area</subject><subject>Laser ablation</subject><subject>Lasers</subject><subject>Mass spectrometry</subject><subject>Mass spectroscopy</subject><subject>Metamorphism</subject><subject>Metamorphism (geology)</subject><subject>Paleozoic</subject><subject>Pressure</subject><subject>Schists</subject><subject>Serpentinite</subject><issn>1345-6296</issn><issn>1349-3825</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2019</creationdate><recordtype>article</recordtype><recordid>eNo9kEtOwzAQhiMEEuWx4gKWWELAjziPJVRQQJXYwNqaOJPiqrWDbYS64w7ckJOQNFU349E_34ylL0kuGL3hWS5vl-su3LCKFjw_SCZMZFUqSi4Pt71Mc17lx8lJCEtKRSFKOkk29847S0xw0XVItFt3LphonA3EtQRsNAvnTcS_n9-FhwZJQN9hH9s-DMRYEj-QPEdnFvANPfW6NgQ8wrA-jJ5MM8QzMGjJPa7iNXmBDuxZctTCKuD57j1N3h8f3qZP6fx19jy9m6dachlT0WSaUkBRFVWpNW9YXkvJaCYLBjUgz8q2LguohYAmr0TBGiFpLmvGZFkwLU6Ty_Fu593nF4aolu7L2_5LxXtBpeS9lZ66GintXQgeW9V5swa_UYyqwa0a3KrRbU9PR3oZIixwz4KPRq9wx7JM5ds6bu2n-gO8Qiv-AcgMiFE</recordid><startdate>2019</startdate><enddate>2019</enddate><creator>YAMADA, Chinatsu</creator><creator>TSUJIMORI, Tatsuki</creator><creator>CHANG, Qing</creator><creator>KIMURA, Jun–Ichi</creator><general>Japan Association of Mineralogical Sciences</general><general>Japan Science and Technology Agency</general><scope>AAYXX</scope><scope>CITATION</scope><scope>8BQ</scope><scope>8FD</scope><scope>F1W</scope><scope>FR3</scope><scope>H8D</scope><scope>H96</scope><scope>JG9</scope><scope>KR7</scope><scope>L.G</scope><scope>L7M</scope></search><sort><creationdate>2019</creationdate><title>Boron isotope compositions of antigorite–grade serpentinites in the Itoigawa–Omi area of the Hida–Gaien Belt, Japan</title><author>YAMADA, Chinatsu ; TSUJIMORI, Tatsuki ; CHANG, Qing ; KIMURA, Jun–Ichi</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c525t-3d4c00ae39798cc2d16b55104571abae248fb87ab33ad69371d35065b115871c3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2019</creationdate><topic>Ablation</topic><topic>Antigorite serpentinite</topic><topic>Boron</topic><topic>Boron isotope</topic><topic>Boron isotopes</topic><topic>Dehydration</topic><topic>Fluids</topic><topic>Hida–Gaien Belt</topic><topic>Isotopes</topic><topic>Itoigawa–Omi area</topic><topic>Laser ablation</topic><topic>Lasers</topic><topic>Mass spectrometry</topic><topic>Mass spectroscopy</topic><topic>Metamorphism</topic><topic>Metamorphism (geology)</topic><topic>Paleozoic</topic><topic>Pressure</topic><topic>Schists</topic><topic>Serpentinite</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>YAMADA, Chinatsu</creatorcontrib><creatorcontrib>TSUJIMORI, Tatsuki</creatorcontrib><creatorcontrib>CHANG, Qing</creatorcontrib><creatorcontrib>KIMURA, Jun–Ichi</creatorcontrib><collection>CrossRef</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Engineering Research Database</collection><collection>Aerospace Database</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>Materials Research Database</collection><collection>Civil Engineering Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Journal of Mineralogical and Petrological Sciences</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>YAMADA, Chinatsu</au><au>TSUJIMORI, Tatsuki</au><au>CHANG, Qing</au><au>KIMURA, Jun–Ichi</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Boron isotope compositions of antigorite–grade serpentinites in the Itoigawa–Omi area of the Hida–Gaien Belt, Japan</atitle><jtitle>Journal of Mineralogical and Petrological Sciences</jtitle><date>2019</date><risdate>2019</risdate><volume>114</volume><issue>6</issue><spage>290</spage><epage>295</epage><pages>290-295</pages><issn>1345-6296</issn><eissn>1349-3825</eissn><abstract>The antigorite–grade serpentinite and Late Paleozoic high–pressure schists are main components of a serpentinite–matrix mélange in the Itoigawa–Omi area, Hida–Gaien Belt, Japan. Based on the petrologic characteristics of the high–pressure schists, the mélange is divided into two units, namely an ‘eclogitic unit’ and a ‘non–eclogitic unit’. Our preliminary in–situ boron isotope analyses of five serpentinites using a laser–ablation multiple–collector inductively–coupled–plasma mass spectrometry (LA–MC–ICPMS) found a systematic difference of boron isotopic trends among the two units in the same mélange. The ‘eclogitic unit’ serpentinites from Yunotani and Kotagi–gawa are characterized by lower δ11B value (mostly lower than +10‰), whereas the non–eclogitic unit serpentinite from Omi–gawa is higher than +10‰. Although the δ11B value of <0‰ was not measured from the eclogitic unit serpentinites, the relatively low δ11B values of <+10‰ might have recorded the signature of fluids released from deep subducted dehydrating slab. In contrast, the non–eclogitic unit serpentinite might have been affected by fluids released from shallower portion. Our new data confirmed the potential sensitivity of the boron isotope signature of serpentinites reflecting variation of high–pressure metamorphism.</abstract><cop>Sendai</cop><pub>Japan Association of Mineralogical Sciences</pub><doi>10.2465/jmps.190726</doi><tpages>6</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | Ablation Antigorite serpentinite Boron Boron isotope Boron isotopes Dehydration Fluids Hida–Gaien Belt Isotopes Itoigawa–Omi area Laser ablation Lasers Mass spectrometry Mass spectroscopy Metamorphism Metamorphism (geology) Paleozoic Pressure Schists Serpentinite |
| title | Boron isotope compositions of antigorite–grade serpentinites in the Itoigawa–Omi area of the Hida–Gaien Belt, Japan |
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