Primary melt from Sannome-gata volcano, NE Japan arc: constraints on generation conditions of rear-arc magmas
The conditions under which rear-arc magmas are generated were estimated using primary basalts from the Sannome-gata volcano, located in the rear of the NE Japan arc. Scoriae from the volcano occur with abundant crustal and mantle xenoliths, suggesting that the magma ascended rapidly from the upper m...
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| Veröffentlicht in: | Contributions to mineralogy and petrology 2014-02, Vol.167 (2), p.1, Article 969 |
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| creator | Kuritani, Takeshi Yoshida, Takeyoshi Kimura, Jun-Ichi Takahashi, Toshiro Hirahara, Yuka Miyazaki, Takashi Senda, Ryoko Chang, Qing Ito, Yoshinori |
| description | The conditions under which rear-arc magmas are generated were estimated using primary basalts from the Sannome-gata volcano, located in the rear of the NE Japan arc. Scoriae from the volcano occur with abundant crustal and mantle xenoliths, suggesting that the magma ascended rapidly from the upper mantle. The scoriae show significant variations in their whole-rock compositions (7.9–11.1 wt% MgO). High-MgO scoriae (MgO > ~9.5 wt%) have mostly homogeneous
87
Sr/
86
Sr ratios (0.70318–0.70320), whereas low-MgO scoriae (MgO 0.70327); ratios tend to increase with decreasing MgO content. The high-MgO scoriae are aphyric, containing ~5 vol% olivine microphenocrysts with Mg# [100 × Mg/(Mg + Fe
2+
)] of up to 90. In contrast, the low-MgO scoriae have crustal xenocrysts of plagioclase, alkali feldspar, and quartz, and the mineralogic modes correlate negatively with whole-rock MgO content. On the basis of these observations, it is inferred that the high-MgO scoriae represent primary or near-primary melts, while the low-MgO scoriae underwent considerable interaction with the crust. Using thermodynamic analysis of the observed petrological features of the high-MgO scoriae, the eruption temperature of the magmas was constrained to 1,160–1,220 °C. Given that the source mantle was depleted MORB-source mantle, the primary magma was plausibly generated by ~7 % melting of a garnet-bearing spinel peridotite; taking this into consideration, and considering the constraints of multi-component thermodynamics, we estimated that the primary Sannome-gata magma was generated in the source mantle with 0.5–0.6 wt% H
2
O at 1,220–1,230 °C and at ~1.8 GPa, and that the H
2
O content of the primary magma was 6–7 wt%. The rear-arc Sannome-gata magma was generated by a lower degree of melting of the mantle at greater depths and lower temperatures than the frontal-arc magma from the Iwate volcano, which was also estimated to be generated by ~15 % melting of the source mantle with 0.6–0.7 wt% H
2
O at ~1,250 °C and at ~1.3 GPa. |
| doi_str_mv | 10.1007/s00410-014-0969-7 |
| format | Article |
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87
Sr/
86
Sr ratios (0.70318–0.70320), whereas low-MgO scoriae (MgO < ~9 wt%) have higher
87
Sr/
86
Sr ratios (>0.70327); ratios tend to increase with decreasing MgO content. The high-MgO scoriae are aphyric, containing ~5 vol% olivine microphenocrysts with Mg# [100 × Mg/(Mg + Fe
2+
)] of up to 90. In contrast, the low-MgO scoriae have crustal xenocrysts of plagioclase, alkali feldspar, and quartz, and the mineralogic modes correlate negatively with whole-rock MgO content. On the basis of these observations, it is inferred that the high-MgO scoriae represent primary or near-primary melts, while the low-MgO scoriae underwent considerable interaction with the crust. Using thermodynamic analysis of the observed petrological features of the high-MgO scoriae, the eruption temperature of the magmas was constrained to 1,160–1,220 °C. Given that the source mantle was depleted MORB-source mantle, the primary magma was plausibly generated by ~7 % melting of a garnet-bearing spinel peridotite; taking this into consideration, and considering the constraints of multi-component thermodynamics, we estimated that the primary Sannome-gata magma was generated in the source mantle with 0.5–0.6 wt% H
2
O at 1,220–1,230 °C and at ~1.8 GPa, and that the H
2
O content of the primary magma was 6–7 wt%. The rear-arc Sannome-gata magma was generated by a lower degree of melting of the mantle at greater depths and lower temperatures than the frontal-arc magma from the Iwate volcano, which was also estimated to be generated by ~15 % melting of the source mantle with 0.6–0.7 wt% H
2
O at ~1,250 °C and at ~1.3 GPa.</description><identifier>ISSN: 0010-7999</identifier><identifier>EISSN: 1432-0967</identifier><identifier>DOI: 10.1007/s00410-014-0969-7</identifier><identifier>CODEN: CMPEAP</identifier><language>eng</language><publisher>Berlin/Heidelberg: Springer Berlin Heidelberg</publisher><subject>Analysis ; Basalt ; Earth ; Earth and Environmental Science ; Earth Sciences ; Geology ; Inclusions ; Low temperature ; Magma ; Mantle ; Melting ; Mineral Resources ; Mineralogy ; Original Paper ; Petrology ; Rocks ; Rocks, Igneous ; Spinel group ; Upper mantle ; Volcanoes</subject><ispartof>Contributions to mineralogy and petrology, 2014-02, Vol.167 (2), p.1, Article 969</ispartof><rights>Springer-Verlag Berlin Heidelberg 2014</rights><rights>COPYRIGHT 2014 Springer</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a510t-869c1e4dcbb596f60c5bc420f4d739da41953fa4b7cd78d367f09b0bc7a256073</citedby><cites>FETCH-LOGICAL-a510t-869c1e4dcbb596f60c5bc420f4d739da41953fa4b7cd78d367f09b0bc7a256073</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s00410-014-0969-7$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s00410-014-0969-7$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,776,780,27901,27902,41464,42533,51294</link.rule.ids></links><search><creatorcontrib>Kuritani, Takeshi</creatorcontrib><creatorcontrib>Yoshida, Takeyoshi</creatorcontrib><creatorcontrib>Kimura, Jun-Ichi</creatorcontrib><creatorcontrib>Takahashi, Toshiro</creatorcontrib><creatorcontrib>Hirahara, Yuka</creatorcontrib><creatorcontrib>Miyazaki, Takashi</creatorcontrib><creatorcontrib>Senda, Ryoko</creatorcontrib><creatorcontrib>Chang, Qing</creatorcontrib><creatorcontrib>Ito, Yoshinori</creatorcontrib><title>Primary melt from Sannome-gata volcano, NE Japan arc: constraints on generation conditions of rear-arc magmas</title><title>Contributions to mineralogy and petrology</title><addtitle>Contrib Mineral Petrol</addtitle><description>The conditions under which rear-arc magmas are generated were estimated using primary basalts from the Sannome-gata volcano, located in the rear of the NE Japan arc. Scoriae from the volcano occur with abundant crustal and mantle xenoliths, suggesting that the magma ascended rapidly from the upper mantle. The scoriae show significant variations in their whole-rock compositions (7.9–11.1 wt% MgO). High-MgO scoriae (MgO > ~9.5 wt%) have mostly homogeneous
87
Sr/
86
Sr ratios (0.70318–0.70320), whereas low-MgO scoriae (MgO < ~9 wt%) have higher
87
Sr/
86
Sr ratios (>0.70327); ratios tend to increase with decreasing MgO content. The high-MgO scoriae are aphyric, containing ~5 vol% olivine microphenocrysts with Mg# [100 × Mg/(Mg + Fe
2+
)] of up to 90. In contrast, the low-MgO scoriae have crustal xenocrysts of plagioclase, alkali feldspar, and quartz, and the mineralogic modes correlate negatively with whole-rock MgO content. On the basis of these observations, it is inferred that the high-MgO scoriae represent primary or near-primary melts, while the low-MgO scoriae underwent considerable interaction with the crust. Using thermodynamic analysis of the observed petrological features of the high-MgO scoriae, the eruption temperature of the magmas was constrained to 1,160–1,220 °C. Given that the source mantle was depleted MORB-source mantle, the primary magma was plausibly generated by ~7 % melting of a garnet-bearing spinel peridotite; taking this into consideration, and considering the constraints of multi-component thermodynamics, we estimated that the primary Sannome-gata magma was generated in the source mantle with 0.5–0.6 wt% H
2
O at 1,220–1,230 °C and at ~1.8 GPa, and that the H
2
O content of the primary magma was 6–7 wt%. The rear-arc Sannome-gata magma was generated by a lower degree of melting of the mantle at greater depths and lower temperatures than the frontal-arc magma from the Iwate volcano, which was also estimated to be generated by ~15 % melting of the source mantle with 0.6–0.7 wt% H
2
O at ~1,250 °C and at ~1.3 GPa.</description><subject>Analysis</subject><subject>Basalt</subject><subject>Earth</subject><subject>Earth and Environmental Science</subject><subject>Earth Sciences</subject><subject>Geology</subject><subject>Inclusions</subject><subject>Low temperature</subject><subject>Magma</subject><subject>Mantle</subject><subject>Melting</subject><subject>Mineral Resources</subject><subject>Mineralogy</subject><subject>Original Paper</subject><subject>Petrology</subject><subject>Rocks</subject><subject>Rocks, Igneous</subject><subject>Spinel group</subject><subject>Upper mantle</subject><subject>Volcanoes</subject><issn>0010-7999</issn><issn>1432-0967</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><sourceid>8G5</sourceid><sourceid>BENPR</sourceid><sourceid>GUQSH</sourceid><sourceid>M2O</sourceid><recordid>eNp1kV9rHSEQxaWk0Js0H6BvQl5jOu7qeu1bCOk_Qlto8yyzri4bVr3RTaHfvi5baAq3-OCM8zsjh0PIGw5XHEC9LQCCAwMuGOhOM_WC7Lhom7VTJ2QHUKdKa_2KnJbyALXfa7kj4VueAuZfNLh5oT6nQL9jjCk4NuKC9GeaLcZ0Sb_c0s94wEgx23fUpliWjFNcCk2Rji66jMtUyzoZprWqA0-zw8yqggYcA5bX5KXHubjzP_cZuX9_--PmI7v7-uHTzfUdQ8lhYftOW-7EYPte6s53YGVvRQNeDKrVAwquZetR9MoOaj-0nfKge-itwkZ2oNozcrHtPeT0-OTKYh7SU471S8MlcCn2XDd_qRFnZ6boU7Vkw1SsuW47CYo3bVspdoTaHM8pOj_V53_4qyN8PYMLkz0q4JvA5lRKdt4ctkwMB7OGa7ZwTQ3XrOGa1WCzaUpl4-jyM4P_Ff0GJSulSA</recordid><startdate>20140201</startdate><enddate>20140201</enddate><creator>Kuritani, Takeshi</creator><creator>Yoshida, Takeyoshi</creator><creator>Kimura, Jun-Ichi</creator><creator>Takahashi, Toshiro</creator><creator>Hirahara, Yuka</creator><creator>Miyazaki, Takashi</creator><creator>Senda, Ryoko</creator><creator>Chang, Qing</creator><creator>Ito, Yoshinori</creator><general>Springer Berlin Heidelberg</general><general>Springer</general><general>Springer Nature B.V</general><scope>AAYXX</scope><scope>CITATION</scope><scope>3V.</scope><scope>7TN</scope><scope>7XB</scope><scope>88I</scope><scope>8FE</scope><scope>8FG</scope><scope>8FK</scope><scope>8G5</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AEUYN</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>BHPHI</scope><scope>BKSAR</scope><scope>CCPQU</scope><scope>D1I</scope><scope>DWQXO</scope><scope>F1W</scope><scope>GNUQQ</scope><scope>GUQSH</scope><scope>H96</scope><scope>HCIFZ</scope><scope>KB.</scope><scope>L.G</scope><scope>L6V</scope><scope>M2O</scope><scope>M2P</scope><scope>M7S</scope><scope>MBDVC</scope><scope>PCBAR</scope><scope>PDBOC</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PTHSS</scope><scope>Q9U</scope><scope>R05</scope></search><sort><creationdate>20140201</creationdate><title>Primary melt from Sannome-gata volcano, NE Japan arc: constraints on generation conditions of rear-arc magmas</title><author>Kuritani, Takeshi ; Yoshida, Takeyoshi ; Kimura, Jun-Ichi ; Takahashi, Toshiro ; Hirahara, Yuka ; Miyazaki, Takashi ; Senda, Ryoko ; Chang, Qing ; Ito, Yoshinori</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a510t-869c1e4dcbb596f60c5bc420f4d739da41953fa4b7cd78d367f09b0bc7a256073</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2014</creationdate><topic>Analysis</topic><topic>Basalt</topic><topic>Earth</topic><topic>Earth and Environmental Science</topic><topic>Earth Sciences</topic><topic>Geology</topic><topic>Inclusions</topic><topic>Low temperature</topic><topic>Magma</topic><topic>Mantle</topic><topic>Melting</topic><topic>Mineral Resources</topic><topic>Mineralogy</topic><topic>Original Paper</topic><topic>Petrology</topic><topic>Rocks</topic><topic>Rocks, Igneous</topic><topic>Spinel group</topic><topic>Upper mantle</topic><topic>Volcanoes</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Kuritani, Takeshi</creatorcontrib><creatorcontrib>Yoshida, Takeyoshi</creatorcontrib><creatorcontrib>Kimura, Jun-Ichi</creatorcontrib><creatorcontrib>Takahashi, Toshiro</creatorcontrib><creatorcontrib>Hirahara, Yuka</creatorcontrib><creatorcontrib>Miyazaki, Takashi</creatorcontrib><creatorcontrib>Senda, Ryoko</creatorcontrib><creatorcontrib>Chang, Qing</creatorcontrib><creatorcontrib>Ito, Yoshinori</creatorcontrib><collection>CrossRef</collection><collection>ProQuest Central (Corporate)</collection><collection>Oceanic Abstracts</collection><collection>ProQuest Central (purchase pre-March 2016)</collection><collection>Science Database (Alumni Edition)</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>Research Library (Alumni Edition)</collection><collection>Materials Science & Engineering Collection</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest One Sustainability</collection><collection>ProQuest Central UK/Ireland</collection><collection>ProQuest Central Essentials</collection><collection>ProQuest Central</collection><collection>Technology Collection</collection><collection>Natural Science Collection</collection><collection>Earth, Atmospheric & Aquatic Science Collection</collection><collection>ProQuest One Community College</collection><collection>ProQuest Materials Science Collection</collection><collection>ProQuest Central Korea</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>ProQuest Central Student</collection><collection>Research Library Prep</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>SciTech Premium Collection</collection><collection>Materials Science Database</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>ProQuest Engineering Collection</collection><collection>Research Library</collection><collection>Science Database</collection><collection>Engineering Database</collection><collection>Research Library (Corporate)</collection><collection>Earth, Atmospheric & Aquatic Science Database</collection><collection>Materials Science Collection</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>Engineering Collection</collection><collection>ProQuest Central Basic</collection><collection>University of Michigan</collection><jtitle>Contributions to mineralogy and petrology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Kuritani, Takeshi</au><au>Yoshida, Takeyoshi</au><au>Kimura, Jun-Ichi</au><au>Takahashi, Toshiro</au><au>Hirahara, Yuka</au><au>Miyazaki, Takashi</au><au>Senda, Ryoko</au><au>Chang, Qing</au><au>Ito, Yoshinori</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Primary melt from Sannome-gata volcano, NE Japan arc: constraints on generation conditions of rear-arc magmas</atitle><jtitle>Contributions to mineralogy and petrology</jtitle><stitle>Contrib Mineral Petrol</stitle><date>2014-02-01</date><risdate>2014</risdate><volume>167</volume><issue>2</issue><spage>1</spage><pages>1-</pages><artnum>969</artnum><issn>0010-7999</issn><eissn>1432-0967</eissn><coden>CMPEAP</coden><abstract>The conditions under which rear-arc magmas are generated were estimated using primary basalts from the Sannome-gata volcano, located in the rear of the NE Japan arc. Scoriae from the volcano occur with abundant crustal and mantle xenoliths, suggesting that the magma ascended rapidly from the upper mantle. The scoriae show significant variations in their whole-rock compositions (7.9–11.1 wt% MgO). High-MgO scoriae (MgO > ~9.5 wt%) have mostly homogeneous
87
Sr/
86
Sr ratios (0.70318–0.70320), whereas low-MgO scoriae (MgO < ~9 wt%) have higher
87
Sr/
86
Sr ratios (>0.70327); ratios tend to increase with decreasing MgO content. The high-MgO scoriae are aphyric, containing ~5 vol% olivine microphenocrysts with Mg# [100 × Mg/(Mg + Fe
2+
)] of up to 90. In contrast, the low-MgO scoriae have crustal xenocrysts of plagioclase, alkali feldspar, and quartz, and the mineralogic modes correlate negatively with whole-rock MgO content. On the basis of these observations, it is inferred that the high-MgO scoriae represent primary or near-primary melts, while the low-MgO scoriae underwent considerable interaction with the crust. Using thermodynamic analysis of the observed petrological features of the high-MgO scoriae, the eruption temperature of the magmas was constrained to 1,160–1,220 °C. Given that the source mantle was depleted MORB-source mantle, the primary magma was plausibly generated by ~7 % melting of a garnet-bearing spinel peridotite; taking this into consideration, and considering the constraints of multi-component thermodynamics, we estimated that the primary Sannome-gata magma was generated in the source mantle with 0.5–0.6 wt% H
2
O at 1,220–1,230 °C and at ~1.8 GPa, and that the H
2
O content of the primary magma was 6–7 wt%. The rear-arc Sannome-gata magma was generated by a lower degree of melting of the mantle at greater depths and lower temperatures than the frontal-arc magma from the Iwate volcano, which was also estimated to be generated by ~15 % melting of the source mantle with 0.6–0.7 wt% H
2
O at ~1,250 °C and at ~1.3 GPa.</abstract><cop>Berlin/Heidelberg</cop><pub>Springer Berlin Heidelberg</pub><doi>10.1007/s00410-014-0969-7</doi></addata></record> |
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| ispartof | Contributions to mineralogy and petrology, 2014-02, Vol.167 (2), p.1, Article 969 |
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| language | eng |
| recordid | cdi_proquest_journals_1501548192 |
| source | Springer Nature - Complete Springer Journals |
| subjects | Analysis Basalt Earth Earth and Environmental Science Earth Sciences Geology Inclusions Low temperature Magma Mantle Melting Mineral Resources Mineralogy Original Paper Petrology Rocks Rocks, Igneous Spinel group Upper mantle Volcanoes |
| title | Primary melt from Sannome-gata volcano, NE Japan arc: constraints on generation conditions of rear-arc magmas |
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