Imaging a magma plumbing system from MASH zone to magma reservoir
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- 作者：Jonathan R. Delpha ; 1 ; jrdelph@rice.edu" class="auth_mail" title="E-mail the corresponding author ; Kevin M. Warda ; 2 ; George Zandta ; Mihai N. Duceaa ; b ; Susan L. Becka
- 关键词：Cordillera ; Andes ; magmatic arcs ; seismology ; crustal structure
- 刊名：Earth and Planetary Science Letters
- 出版年：2017
- 出版时间：1 January 2017
- 年：2017
- 卷：457
- 期：Complete
- 页码：313-324
- 全文大小：2596 K
文摘
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Seismic imaging of a lithospheric-scale magma plumbing system.
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3 low velocity bodies in the mid-crust beneath the active volcanic arc and backarc.
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The mid-crustal magma reservoir beneath the Cerro Galan Caldera contains ∼22% melt.
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Slow upper mantle velocities are indicative of a MASH zone with class="mathmlsrc">class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0012821X1630557X&_mathId=si1.gif&_user=111111111&_pii=S0012821X1630557X&_rdoc=1&_issn=0012821X&md5=0082e48d206fd666917f89ea3f995f59" title="Click to view the MathML source">∼4–9%class="mathContainer hidden">class="mathCode"> melt.
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A large MASH zone underlies the southern Puna Plateau as a result of delamination.