Late Cenozoic calc-alkaline volcanism over the Payenia shallow subduction zone, South-Central Andean back-arc (34°30′–37°S), Argentina
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- 作者：Vanesa D. Litvaka ; vane@gl.fcen.uba.ar" class="auth_mail" title="E-mail the corresponding author ; Mauro G. Spagnuoloa ; maurospag@yahoo.com" class="auth_mail" title="E-mail the corresponding author ; André ; s Folgueraa ; andresfolguera2@yahoo.com.ar" class="auth_mail" title="E-mail the corresponding author ; Stella Pomab ; stella@gl.fcen.uba.ar" class="auth_mail" title="E-mail the corresponding author ; Rosemary E. Jonesc ; Rosie.Jones@earth.ox.ac.uk" class="auth_mail" title="E-mail the corresponding author ; Ví ; ctor A. Ramosa ; andes@gl.fcen.uba.ar" class="auth_mail" title="E-mail the corresponding author
- 关键词：Andesitic volcanism ; Shallow subduction ; Back-arc ; Geochemistry ; San Rafael Block
- 刊名：Journal of South American Earth Sciences
- 出版年：2015
- 出版时间：December 2015
- 年：2015
- 卷：64
- 期：part_P2
- 页码：365-380
- 全文大小：7985 K
文摘
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We studied late Miocene–early Pliocene volcanic centers in the Payenia back-arc.
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Two stages of volcanism are mapped by age and location of the lavas.
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An increase of arc-like signature is seen from older to younger magmas.
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Geochemical data support the proposal of a shallow subduction zone.
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Latest Miocene-early Pliocene volcanism shows shallow subduction easternmost expansion.