DOI: 10.1002/grl.50493
论文题名: Diapiric ascent of silicic magma beneath the Bolivian Altiplano
作者: Del Potro R. ; Díez M. ; Blundy J. ; Camacho A.G. ; Gottsmann J.
刊名: Geophysical Research Letters
ISSN: 0094-9016
EISSN: 1944-8747
出版年: 2013
卷: 40, 期: 10 起始页码: 2044
结束页码: 2048
语种: 英语
英文关键词: Altiplano-Puna
; gravity inversion
; Igneous diapirs
; magma ascent
; Uturuncu volcano
Scopus关键词: Altiplano-Puna
; Compositional evolution
; Distributed configuration
; Gravity inversions
; Igneous diapirs
; Magma ascents
; Structural connections
; Vertical transports
; Digital storage
; Volcanoes
; Gravitation
; continental crust
; geology
; geophysics
; magma
; petrology
; resolution
; silicic acid
; three-dimensional modeling
; volcanic eruption
; volume
; Andes
; Bolivia
英文摘要: The vertical transport of large volumes of silicic magma, which drives volcanic eruptions and the long-term compositional evolution of the continental crust, is a highly debated problem. In recent years, dyking has been favored as the main ascent mechanism, but the structural connection between a distributed configuration of melt-filled pores in the source region and shallow magma reservoirs remains unsolved. In the Central Andes, inversion of a new high-resolution Bouguer anomaly data over the Altiplano-Puna Magma Body (APMB) reveals ∼15 km wide, vertically elongated, low-density, 3D structures rooted at the top of the APMB at 20 km depth. We integrate our gravity inversion with the available geophysical, geological, and petrological observations, and in agreement with petrological/mechanical considerations propose that, in this region of the Andes, partially molten granitic bodies ascend diapirically through the hot ductile mid-upper crust. © 2013 American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84879975259&doi=10.1002%2fgrl.50493&partnerID=40&md5=70f94e4b52a298d6881ae1b978a95ed3
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6280
Appears in Collections: 气候减缓与适应
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作者单位: School of Earth Sciences, University of Bristol, Bristol, United Kingdom
Recommended Citation:
Del Potro R.,Díez M.,Blundy J.,et al. Diapiric ascent of silicic magma beneath the Bolivian Altiplano[J]. Geophysical Research Letters,2013-01-01,40(10).