气候变化领域集成服务门户(CCPortal): Petrologic imaging of the architecture of magma reservoirs feeding caldera-forming eruptions

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DOI	10.1016/j.epsl.2020.116572
	Petrologic imaging of the architecture of magma reservoirs feeding caldera-forming eruptions
	Black B.A.; Andrews B.J.
发表日期	2020
ISSN	0012821X
卷号	552
英文摘要	Caldera footprints and erupted magma volumes provide a unique constraint on vertical dimensions of upper crustal magma reservoirs that feed explosive silicic eruptions. Here we define a Vertical Separation (VS) ratio in which we compare the geometric vertical extent with the range of depths indicated petrologically by melt inclusion water and CO2 saturation pressures for fifteen caldera-forming eruptions spanning ∼100 km3 to ∼103 km3 in volume. We supplement melt inclusion saturation pressures with rhyolite-MELTS barometry and plagioclase-melt hygrometry to generate a petrologic image of magma reservoir architecture. We find that pre-eruptive upper crustal magma reservoirs range from contiguous bodies (where petrologic and geometric estimates match closely) to vertically dispersed structures. Vertically dispersed pre-eruptive reservoirs are more common among intermediate-volume eruptions than among the smallest and largest caldera-forming eruptions. We infer that the architecture of magma reservoirs tracks the thermomechanical evolution of large volcanic systems. © 2020 Elsevier B.V.
关键词	caldera-forming eruptions magma storage magmatic architecture petrologic imaging the life cycle of volcanoes
英文关键词	Architecture; Feldspar; Gasoline; Caldera-forming eruption; Dispersed structure; Magma reservoirs; Saturation pressure; Thermo-mechanical; Vertical dimensions; Vertical separation; Volcanic systems; Reservoirs (water); caldera; crustal structure; image analysis; magma chamber; petrology; volcanic eruption; volcanology
语种	英语
来源期刊	Earth and Planetary Science Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/202493
作者单位	Earth and Atmospheric Science, City College of New York, New York, NY 10031, United States; Earth and Environmental Sciences, Graduate Center, City University of New York, New York, NY 10017, United States; Global Volcanism Program, Smithsonian Institution, Washington, DC, United States
推荐引用方式 GB/T 7714	Black B.A.,Andrews B.J.. Petrologic imaging of the architecture of magma reservoirs feeding caldera-forming eruptions[J],2020,552.
APA	Black B.A.,&Andrews B.J..(2020).Petrologic imaging of the architecture of magma reservoirs feeding caldera-forming eruptions.Earth and Planetary Science Letters,552.
MLA	Black B.A.,et al."Petrologic imaging of the architecture of magma reservoirs feeding caldera-forming eruptions".Earth and Planetary Science Letters 552(2020).