Petrological characteristics and volatile content of magma from the 2000 eruption of Miyakejima Volcano, Japan
Issue Title: The 2000 eruption of Miyakeijma volcano, Japan Among the series of eruptions at Miyakejima volcano in 2000, the largest summit explosion occurred on 18 August 2000. During this explosion, vesiculated bombs and lapilli having cauliflower-like shapes were ejected as essential products. Pe...
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| Veröffentlicht in: | Bulletin of volcanology 2005-03, Vol.67 (3), p.268-280 |
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| creator | SAITO, Genji UTO, Kozo KAZAHAYA, Kohei SHINOHARA, Hiroshi KAWANABE, Yoshihisa SATOH, Hisao |
| description | Issue Title: The 2000 eruption of Miyakeijma volcano, Japan Among the series of eruptions at Miyakejima volcano in 2000, the largest summit explosion occurred on 18 August 2000. During this explosion, vesiculated bombs and lapilli having cauliflower-like shapes were ejected as essential products. Petrological observation and chemical analyses of the essential ejecta and melt inclusions were carried out in order to investigate magma ascent and eruption processes. SEM images indicate that the essential bombs and lapilli have similar textures, which have many tiny bubbles, crystal-rich and glass-poor groundmass and microphenocrysts of plagioclase, augite and olivine. Black ash particles, which compose 40% of the air-fall ash from the explosion, also have similar textures to the essential bombs. Whole-rock analyses show that the chemical composition of all essential ejecta is basaltic (SiO^sub 2^=51-52 wt%). Chemical analyses of melt inclusions in plagioclase and olivine phenocrysts indicate that melt in the magma had 0.9-1.9 wt% H^sub 2^O, |
| doi_str_mv | 10.1007/s00445-004-0409-z |
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| fullrecord | <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_journals_613223767</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>2083128641</sourcerecordid><originalsourceid>FETCH-LOGICAL-c368t-67b299e9b275c4e1a5968c273f59f281be8b73812fc57307ee7a9899d53b46383</originalsourceid><addsrcrecordid>eNpFUMtKAzEUDaJgrX6AuyC4c_QmmZkkSyk-UXShbkMmzbRTp8mYpEL79aa04ObcxXncw0HonMA1AeA3EaAsqyJjASXIYnOARqRktABB5CEaAa1EISTAMTqJcQGQyZqPkHu3Kfjezzqje2zmOmiTbOhi6kzE2k3xr-916nqLjXfJuoR9i5d6ttS4DX6J09xiCgDYhtWQOu-2_Gu31t920WXRl--Ndv4KP-tBu1N01Oo-2rP9HaPP-7uPyWPx8vbwNLl9KQyrRSpq3lAprWwor0xpia5kLQzlrK1kSwVprGg4E4S2puIMuLVcSyHltGJNWTPBxuhilzsE_7OyMamFXwWXX6qaMEoZr3kWkZ3IBB9jsK0aQq4c1oqA2q6qdquqjGq7qtpkz-U-WMe8WBu0M138N9YVz10Z-wPguHdF</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>613223767</pqid></control><display><type>article</type><title>Petrological characteristics and volatile content of magma from the 2000 eruption of Miyakejima Volcano, Japan</title><source>SpringerLink Journals</source><creator>SAITO, Genji ; UTO, Kozo ; KAZAHAYA, Kohei ; SHINOHARA, Hiroshi ; KAWANABE, Yoshihisa ; SATOH, Hisao</creator><creatorcontrib>SAITO, Genji ; UTO, Kozo ; KAZAHAYA, Kohei ; SHINOHARA, Hiroshi ; KAWANABE, Yoshihisa ; SATOH, Hisao</creatorcontrib><description>Issue Title: The 2000 eruption of Miyakeijma volcano, Japan Among the series of eruptions at Miyakejima volcano in 2000, the largest summit explosion occurred on 18 August 2000. During this explosion, vesiculated bombs and lapilli having cauliflower-like shapes were ejected as essential products. Petrological observation and chemical analyses of the essential ejecta and melt inclusions were carried out in order to investigate magma ascent and eruption processes. SEM images indicate that the essential bombs and lapilli have similar textures, which have many tiny bubbles, crystal-rich and glass-poor groundmass and microphenocrysts of plagioclase, augite and olivine. Black ash particles, which compose 40% of the air-fall ash from the explosion, also have similar textures to the essential bombs. Whole-rock analyses show that the chemical composition of all essential ejecta is basaltic (SiO^sub 2^=51-52 wt%). Chemical analyses of melt inclusions in plagioclase and olivine phenocrysts indicate that melt in the magma had 0.9-1.9 wt% H^sub 2^O, <0.011 wt% CO^sub 2^, 0.04-0.17 wt% S and 0.06-0.1 wt% Cl. The variation in volatile content suggests degassing of the magma during ascent up to a depth of about 1 km. The ratio of H^sub 2^O and S content of melt inclusions is similar to that of volcanic gas, which has been intensely and continuously emitted from the summit since the end of August 2000, indicating that the 18 August magma is the source of the gas emission. Based on the volatile content of the melt inclusions and the volcanic gas composition, the initial bulk volatile content of the magma was estimated to be 1.6-1.9 wt% H^sub 2^O, 0.08-0.1 wt% CO^sub 2^, 0.11-0.17 wt% S and 0.06-0.07 wt% Cl. The basaltic magma ascended from a deeper chamber (10 km) due to decrease in magma density caused by volatile exsolution with pressure decrease. The highly vesiculated magma, which had at least 30 vol% bubbles, may have come into contact with ground water at sea level causing the large explosion of 18 August 2000.[PUBLICATION ABSTRACT] Erratum DOI: 10.1007/s00445-005-0431-9</description><identifier>ISSN: 0258-8900</identifier><identifier>EISSN: 1432-0819</identifier><identifier>DOI: 10.1007/s00445-004-0409-z</identifier><identifier>CODEN: BUVOEW</identifier><language>eng</language><publisher>Heidelberg: Springer</publisher><subject>Bubbles ; Crystalline rocks ; Degassing ; Earth sciences ; Earth, ocean, space ; Engineering and environment geology. 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During this explosion, vesiculated bombs and lapilli having cauliflower-like shapes were ejected as essential products. Petrological observation and chemical analyses of the essential ejecta and melt inclusions were carried out in order to investigate magma ascent and eruption processes. SEM images indicate that the essential bombs and lapilli have similar textures, which have many tiny bubbles, crystal-rich and glass-poor groundmass and microphenocrysts of plagioclase, augite and olivine. Black ash particles, which compose 40% of the air-fall ash from the explosion, also have similar textures to the essential bombs. Whole-rock analyses show that the chemical composition of all essential ejecta is basaltic (SiO^sub 2^=51-52 wt%). Chemical analyses of melt inclusions in plagioclase and olivine phenocrysts indicate that melt in the magma had 0.9-1.9 wt% H^sub 2^O, <0.011 wt% CO^sub 2^, 0.04-0.17 wt% S and 0.06-0.1 wt% Cl. The variation in volatile content suggests degassing of the magma during ascent up to a depth of about 1 km. The ratio of H^sub 2^O and S content of melt inclusions is similar to that of volcanic gas, which has been intensely and continuously emitted from the summit since the end of August 2000, indicating that the 18 August magma is the source of the gas emission. Based on the volatile content of the melt inclusions and the volcanic gas composition, the initial bulk volatile content of the magma was estimated to be 1.6-1.9 wt% H^sub 2^O, 0.08-0.1 wt% CO^sub 2^, 0.11-0.17 wt% S and 0.06-0.07 wt% Cl. The basaltic magma ascended from a deeper chamber (10 km) due to decrease in magma density caused by volatile exsolution with pressure decrease. The highly vesiculated magma, which had at least 30 vol% bubbles, may have come into contact with ground water at sea level causing the large explosion of 18 August 2000.[PUBLICATION ABSTRACT] Erratum DOI: 10.1007/s00445-005-0431-9</description><subject>Bubbles</subject><subject>Crystalline rocks</subject><subject>Degassing</subject><subject>Earth sciences</subject><subject>Earth, ocean, space</subject><subject>Engineering and environment geology. Geothermics</subject><subject>Exact sciences and technology</subject><subject>Explosions</subject><subject>Igneous and metamorphic rocks petrology, volcanic processes, magmas</subject><subject>Magma</subject><subject>Natural hazards: prediction, damages, etc</subject><subject>Volcanic eruptions</subject><subject>Volcanic gases</subject><subject>Volcanoes</subject><subject>Volcanology</subject><issn>0258-8900</issn><issn>1432-0819</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2005</creationdate><recordtype>article</recordtype><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><recordid>eNpFUMtKAzEUDaJgrX6AuyC4c_QmmZkkSyk-UXShbkMmzbRTp8mYpEL79aa04ObcxXncw0HonMA1AeA3EaAsqyJjASXIYnOARqRktABB5CEaAa1EISTAMTqJcQGQyZqPkHu3Kfjezzqje2zmOmiTbOhi6kzE2k3xr-916nqLjXfJuoR9i5d6ttS4DX6J09xiCgDYhtWQOu-2_Gu31t920WXRl--Ndv4KP-tBu1N01Oo-2rP9HaPP-7uPyWPx8vbwNLl9KQyrRSpq3lAprWwor0xpia5kLQzlrK1kSwVprGg4E4S2puIMuLVcSyHltGJNWTPBxuhilzsE_7OyMamFXwWXX6qaMEoZr3kWkZ3IBB9jsK0aQq4c1oqA2q6qdquqjGq7qtpkz-U-WMe8WBu0M138N9YVz10Z-wPguHdF</recordid><startdate>20050301</startdate><enddate>20050301</enddate><creator>SAITO, Genji</creator><creator>UTO, Kozo</creator><creator>KAZAHAYA, Kohei</creator><creator>SHINOHARA, Hiroshi</creator><creator>KAWANABE, Yoshihisa</creator><creator>SATOH, Hisao</creator><general>Springer</general><general>Springer Nature B.V</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>3V.</scope><scope>7TG</scope><scope>7TN</scope><scope>7XB</scope><scope>88I</scope><scope>8FK</scope><scope>ABUWG</scope><scope>AEUYN</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BHPHI</scope><scope>BKSAR</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>F1W</scope><scope>GNUQQ</scope><scope>H96</scope><scope>HCIFZ</scope><scope>KL.</scope><scope>L.G</scope><scope>M2P</scope><scope>PCBAR</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>Q9U</scope></search><sort><creationdate>20050301</creationdate><title>Petrological characteristics and volatile content of magma from the 2000 eruption of Miyakejima Volcano, Japan</title><author>SAITO, Genji ; UTO, Kozo ; KAZAHAYA, Kohei ; SHINOHARA, Hiroshi ; KAWANABE, Yoshihisa ; SATOH, Hisao</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c368t-67b299e9b275c4e1a5968c273f59f281be8b73812fc57307ee7a9899d53b46383</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2005</creationdate><topic>Bubbles</topic><topic>Crystalline rocks</topic><topic>Degassing</topic><topic>Earth sciences</topic><topic>Earth, ocean, space</topic><topic>Engineering and environment geology. Geothermics</topic><topic>Exact sciences and technology</topic><topic>Explosions</topic><topic>Igneous and metamorphic rocks petrology, volcanic processes, magmas</topic><topic>Magma</topic><topic>Natural hazards: prediction, damages, etc</topic><topic>Volcanic eruptions</topic><topic>Volcanic gases</topic><topic>Volcanoes</topic><topic>Volcanology</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>SAITO, Genji</creatorcontrib><creatorcontrib>UTO, Kozo</creatorcontrib><creatorcontrib>KAZAHAYA, Kohei</creatorcontrib><creatorcontrib>SHINOHARA, Hiroshi</creatorcontrib><creatorcontrib>KAWANABE, Yoshihisa</creatorcontrib><creatorcontrib>SATOH, Hisao</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>ProQuest Central (Corporate)</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Oceanic Abstracts</collection><collection>ProQuest Central (purchase pre-March 2016)</collection><collection>Science Database (Alumni Edition)</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</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>Natural Science Collection</collection><collection>Earth, Atmospheric & Aquatic Science Collection</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central Korea</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>ProQuest Central Student</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>SciTech Premium Collection</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>Science Database</collection><collection>Earth, Atmospheric & Aquatic Science Database</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>ProQuest Central Basic</collection><jtitle>Bulletin of volcanology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>SAITO, Genji</au><au>UTO, Kozo</au><au>KAZAHAYA, Kohei</au><au>SHINOHARA, Hiroshi</au><au>KAWANABE, Yoshihisa</au><au>SATOH, Hisao</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Petrological characteristics and volatile content of magma from the 2000 eruption of Miyakejima Volcano, Japan</atitle><jtitle>Bulletin of volcanology</jtitle><date>2005-03-01</date><risdate>2005</risdate><volume>67</volume><issue>3</issue><spage>268</spage><epage>280</epage><pages>268-280</pages><issn>0258-8900</issn><eissn>1432-0819</eissn><coden>BUVOEW</coden><abstract>Issue Title: The 2000 eruption of Miyakeijma volcano, Japan Among the series of eruptions at Miyakejima volcano in 2000, the largest summit explosion occurred on 18 August 2000. During this explosion, vesiculated bombs and lapilli having cauliflower-like shapes were ejected as essential products. Petrological observation and chemical analyses of the essential ejecta and melt inclusions were carried out in order to investigate magma ascent and eruption processes. SEM images indicate that the essential bombs and lapilli have similar textures, which have many tiny bubbles, crystal-rich and glass-poor groundmass and microphenocrysts of plagioclase, augite and olivine. Black ash particles, which compose 40% of the air-fall ash from the explosion, also have similar textures to the essential bombs. Whole-rock analyses show that the chemical composition of all essential ejecta is basaltic (SiO^sub 2^=51-52 wt%). Chemical analyses of melt inclusions in plagioclase and olivine phenocrysts indicate that melt in the magma had 0.9-1.9 wt% H^sub 2^O, <0.011 wt% CO^sub 2^, 0.04-0.17 wt% S and 0.06-0.1 wt% Cl. The variation in volatile content suggests degassing of the magma during ascent up to a depth of about 1 km. The ratio of H^sub 2^O and S content of melt inclusions is similar to that of volcanic gas, which has been intensely and continuously emitted from the summit since the end of August 2000, indicating that the 18 August magma is the source of the gas emission. Based on the volatile content of the melt inclusions and the volcanic gas composition, the initial bulk volatile content of the magma was estimated to be 1.6-1.9 wt% H^sub 2^O, 0.08-0.1 wt% CO^sub 2^, 0.11-0.17 wt% S and 0.06-0.07 wt% Cl. The basaltic magma ascended from a deeper chamber (10 km) due to decrease in magma density caused by volatile exsolution with pressure decrease. The highly vesiculated magma, which had at least 30 vol% bubbles, may have come into contact with ground water at sea level causing the large explosion of 18 August 2000.[PUBLICATION ABSTRACT] Erratum DOI: 10.1007/s00445-005-0431-9</abstract><cop>Heidelberg</cop><pub>Springer</pub><doi>10.1007/s00445-004-0409-z</doi><tpages>13</tpages></addata></record> |
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| subjects | Bubbles Crystalline rocks Degassing Earth sciences Earth, ocean, space Engineering and environment geology. Geothermics Exact sciences and technology Explosions Igneous and metamorphic rocks petrology, volcanic processes, magmas Magma Natural hazards: prediction, damages, etc Volcanic eruptions Volcanic gases Volcanoes Volcanology |
| title | Petrological characteristics and volatile content of magma from the 2000 eruption of Miyakejima Volcano, Japan |
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