globalchange  > 科学计划与规划
DOI: 10.1002/2015GL064519
论文题名:
Rapid onset of mafic magmatism facilitated by volcanic edifice collapse
作者: Cassidy M.; Watt S.F.L.; Talling P.J.; Palmer M.R.; Edmonds M.; Jutzeler M.; Wall-Palmer D.; Manga M.; Coussens M.; Gernon T.; Taylor R.N.; Michalik A.; Inglis E.; Breitkreuz C.; Le Friant A.; Ishizuka O.; Boudon G.; McCanta M.C.; Adachi T.; Hornbach M.J.; Colas S.L.; Endo D.; Fujinawa A.; Kataoka K.S.; Maeno F.; Tamura Y.; Wang F.
刊名: Geophysical Research Letters
ISSN: 0094-8683
EISSN: 1944-8414
出版年: 2015
卷: 42, 期:12
起始页码: 4778
结束页码: 4785
语种: 英语
英文关键词: clinopyroxene ; magma ascent ; petrology ; sector collapse
Scopus关键词: Basalt ; Buildings ; Landslides ; Offshore drilling ; Petrography ; Petrology ; Stratigraphy ; Tectonics ; Unloading ; Basaltic volcanism ; Clinopyroxenes ; Eruption deposits ; Hazard Assessment ; Integrated ocean drilling programs ; Magma ascents ; Petrological analysis ; Sector collapse ; Volcanoes ; basalt ; clinopyroxene ; collapse ; geobarometry ; hazard assessment ; Integrated Ocean Observing System ; landslide ; mafic rock ; magma ; magmatism ; petrology ; stratigraphy ; subduction zone ; unloading ; volcanic eruption ; volcanism ; Leeward Islands [Lesser Antilles] ; Montserrat ; Soufriere Hills Volcano
英文摘要: Volcanic edifice collapses generate some of Earth's largest landslides. How such unloading affects the magma storage systems is important for both hazard assessment and for determining long-term controls on volcano growth and decay. Here we present a detailed stratigraphic and petrological analyses of volcanic landslide and eruption deposits offshore Montserrat, in a subduction zone setting, sampled during Integrated Ocean Drilling Program Expedition 340. A large (6-10 km3) collapse of the Soufrière Hills Volcano at ∼130 ka was followed by explosive basaltic volcanism and the formation of a new basaltic volcanic center, the South Soufrière Hills, estimated to have initiated <100 years after collapse. This basaltic volcanism was a sharp departure from the andesitic volcanism that characterized Soufrière Hills' activity before the collapse. Mineral-melt thermobarometry demonstrates that the basaltic magma's transit through the crust was rapid and from midcrustal depths. We suggest that this rapid ascent was promoted by unloading following collapse. © 2015. The Authors.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84948717129&doi=10.1002%2f2015GL064519&partnerID=40&md5=462a8b23387b3c6dd39e9c426e4a0504
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8299
Appears in Collections:科学计划与规划
气候变化与战略

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作者单位: Ocean and Earth Science, University of Southampton, Southampton, United Kingdom

Recommended Citation:
Cassidy M.,Watt S.F.L.,Talling P.J.,et al. Rapid onset of mafic magmatism facilitated by volcanic edifice collapse[J]. Geophysical Research Letters,2015-01-01,42(12).
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