气候变化领域集成服务门户(CCPortal): Warm storage for arc magmas

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DOI	10.1073/pnas.1616129113
	Warm storage for arc magmas
	Barboni M.; Boehnke P.; Schmitt A.K.; Mark Harrison T.; Shane P.; Bouvier A.-S.; Baumgartner L.
发表日期	2016
ISSN	0027-8424
起始页码	13959
结束页码	13964
卷号	113 期号:49
英文摘要	Felsic magmatic systems represent the vast majority of volcanic activity that poses a threat to human life. The tempo and magnitude of these eruptions depends on the physical conditions under which magmas are retained within the crust. Recently the case has been made that volcanic reservoirs are rarely molten and only capable of eruption for durations as brief as 1,000 years following magma recharge. If the "cold storage" model is generally applicable, then geophysical detection of melt beneath volcanoes is likely a sign of imminent eruption. However, some arc volcanic centers have been active for tens of thousands of years and show evidence for the continual presence of melt. To address this seeming paradox, zircon geochronology and geochemistry from both the frozen lava and the cogenetic enclaves they host from the Soufrière Volcanic Center (SVC), a long-lived volcanic complex in the Lesser Antilles arc, were integrated to track the preeruptive thermal and chemical history of the magma reservoir. Our results show that the SVC reservoir was likely eruptible for periods of several tens of thousands of years or more with punctuated eruptions during these periods. These conclusions are consistent with results from other arc volcanic reservoirs and suggest that arc magmas are generally stored warm. Thus, the presence of intracrustal melt alone is insufficient as an indicator of imminent eruption, but instead represents the normal state of magma storage underneath dormant volcanoes.
英文关键词	Arc magma; Eruption; Volcano; Zircon
语种	英语
scopus关键词	zirconium; Article; geochemistry; heat; priority journal; storage; storage temperature; volcano
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/158972
作者单位	Barboni, M., Department of Earth, Planetary, and Space Sciences, University of California, Los Angeles, CA 90095, United States; Boehnke, P., Department of Earth, Planetary, and Space Sciences, University of California, Los Angeles, CA 90095, United States; Schmitt, A.K., Institute of Earth Sciences, Heidelberg University, Heidelberg, 69120, Germany; Mark Harrison, T., Department of Earth, Planetary, and Space Sciences, University of California, Los Angeles, CA 90095, United States; Shane, P., School of Environment, University of Auckland, Auckland, 1142, New Zealand; Bouvier, A.-S., Institute of Earth Sciences, University of Lausanne, Lausanne, 1015, Switzerland; Baumgartner, L., Institute of Earth Sciences, University of Lausanne, Lausanne, 1015, Switzerland
推荐引用方式 GB/T 7714	Barboni M.,Boehnke P.,Schmitt A.K.,et al. Warm storage for arc magmas[J],2016,113(49).
APA	Barboni M..,Boehnke P..,Schmitt A.K..,Mark Harrison T..,Shane P..,...&Baumgartner L..(2016).Warm storage for arc magmas.Proceedings of the National Academy of Sciences of the United States of America,113(49).
MLA	Barboni M.,et al."Warm storage for arc magmas".Proceedings of the National Academy of Sciences of the United States of America 113.49(2016).