Identifying Laurentian and SW Gondwana sources in the Neoproterozoic to Early Paleozoic metasedimentary rocks of the Sierras Pampeanas: Paleogeographic and tectonic implications
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- 作者：Carlos W. Rapelaa ; crapela@cig.museo.unlp.edu.ar" class="auth_mail" title="E-mail the corresponding author ; Sebastian O. Verdecchiab ; Cesar Casquetc ; Robert J. Pankhurstd ; Edgardo G. Baldob ; Carmen Galindoc ; Juan A. Murrab ; Juan A. Dahlquistb ; C. Mark Fanninge
- 关键词：Southwestern Gondwana assembly ; MARA block ; Sierras Pampeanas ; U&ndash ; Pb provenance ; Early Cambrian collision
- 刊名：Gondwana Research
- 出版年：2016
- 出版时间：April 2016
- 年：2016
- 卷：32
- 期：Complete
- 页码：193-212
- 全文大小：4592 K
文摘
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Western and Eastern Pampean sediments have distinct Laurentian and Kalahari sources.
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O–Hf signature of ca. 1.4 Ga zircon in both sediments points to easternmost Laurentian source.
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Their Early Cambrian Pampean collision marks the assembly of SW Gondwana.