Feasibility of melt segregation from a crystal mush in response to the 2011–2012 eruption at Cordón Caulle, Chile
Feasibility of melt segregation from a crystal mush in response to the 2011–2012 eruption at Cordón Caulle, Chile
复制标题
响应 2011 年至 2012 年智利科东考勒火山喷发,从晶体糊中熔体分离的可行性
DOI:
10.1093/gji/ggad259
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发表时间:
2023
影响因子:
2.8
通讯作者:
Liao, Yang
中科院分区:
文献类型:
--
作者:
Phelps, Patrick R.;Gonnermann, Helge M.;Winslow, Heather;Ruprecht, Philipp;Pritchard, Matthew E.;Delgado, Francisco;Liao, Yang
The 2011–2012 eruption at Cordón Caulle in Chile produced crystal-poor rhyolitic magma with crystal-rich mafic enclaves whose interstitial glass is of identical composition to the host rhyolite. Eruptible rhyolites are thought to be genetically associated with crystal-rich magma mushes, and the enclaves within the Cordón Caulle rhyolite support the existence of a magma mush from which the erupted magma was derived. Moreover, towards the end of the 2011–2012 eruption, subsidence gave way to inflation that has on average been continuous through at least 2020. We hypothesize that magma segregation from a crystal mush could be the source of the observed inflation. Conceptually, magma withdrawal from a crystal-poor rhyolite reservoir caused its depressurization, which could have led to upward flow of interstitial melt within an underlying crystal mush, causing a new batch of magma to segregate and partially recharge the crystal-poor rhyolite body. Because the compressibility of the crystalline matrix of the mush is expected to be lower than that of the interstitial melt, which likely contains some fraction of volatile bubbles, this redistribution of melt would result in a net increase in volume of the system and in the observed inflation. We use numerical modelling of subsurface magma flow and storage to show under which conditions such a scenario is supported by geodetic and petrologic observations.
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影响因子:
3.5
作者:
M. Pistolesi;R. Cioni;C. Bonadonna;M. Elissondo;V. Baumann;A. Bertagnini;Laura Chiari;Rafael Gonzales;M. Rosi;L. Francalanci
通讯作者:
L. Francalanci
DOI:
--
发表时间:
2021
期刊:
Journal of Geophysical Research: Solid Earth
影响因子:
--
作者:
W. Hildreth
通讯作者:
W. Hildreth
影响因子:
5.3
作者:
Jay, Jennifer;Costa, Fidel;Herrin, Jason
通讯作者:
Herrin, Jason
DOI:
--
发表时间:
2017
期刊:
影响因子:
--
作者:
A. Wendt;A. Tassara;J. Báez;D. Basualto;L. Lara;Francisco Garcia
通讯作者:
Francisco Garcia
DOI:
--
发表时间:
1996
期刊:
影响因子:
--
作者:
C. Fletcher
通讯作者:
C. Fletcher