Geochemistry of a Triassic dyke swarm in the North Patagonian Massif, Argentina. Implications for a postorogenic event of the Permian Gondwanide orogeny
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- 作者：Santiago N. Gonzá ; leza ; sgonzalez@unrn.edu.ar" class="auth_mail" title="E-mail the corresponding author ; Gerson A. Grecoa ; gersongreco@gmail.com" class="auth_mail" title="E-mail the corresponding author ; Pablo D. Gonzá ; leza ; pdgonzalez@unrn.edu.ar" class="auth_mail" title="E-mail the corresponding author ; Ana M. Satob ; sato@cig.museo.unlp.edu.ar" class="auth_mail" title="E-mail the corresponding author ; Eduardo J. Llambí ; asb ; llambias@cig.museo.unlp.edu.ar" class="auth_mail" title="E-mail the corresponding author ; Ricardo Varelab ; ricardovarela4747@gmail.com" class="auth_mail" title="E-mail the corresponding author
- 关键词：Patagonia ; Trachyandesite ; Mildly alkaline ; Extension ; Postorogenic
- 刊名：Journal of South American Earth Sciences
- 出版年：2016
- 出版时间：October 2016
- 年：2016
- 卷：70
- 期：Complete
- 页码：69-82
- 全文大小：6051 K
文摘
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A Triassic dyke swarm has been recognized at North Patagonian Massif.
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The dykes are mesosilicic with minor basic and acidic compositions.
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The rocks show a mildly alkaline trend.
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The difference in composition of the dykes might occur due to different sources.
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The swarm is related to a postorogenic Anisian extensional tectonic regime.