A paleoproterozoic intra-arc basin associated with a juvenile source in the Southern Brasilia Orogen: Application of U-Pb and Hf-Nd isotopic analyses to provenance studies of complex areas
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- 作者：Alice Westina ; alice.teixeira@usp.br" class="auth_mail" title="E-mail the corresponding author ; Mario C. Campos Netoa ; Chris J. Hawkesworthb ; c ; Peter A. Cawoodb ; Bruno Dhuimec ; Hé ; lè ; ne Delavaultb
- 关键词：U&ndash ; Pb LA-MC-ICP-MS ; Lu&ndash ; Hf LA-MC-ICP-MS ; Nd isotopes ; Provenance ; Tectonic setting ; Continental crust generation
- 刊名：Precambrian Research
- 出版年：2016
- 出版时间：May 2016
- 年：2016
- 卷：276
- 期：Complete
- 页码：178-193
- 全文大小：5884 K
文摘
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São Vicente Complex dominant source: juvenile magmatic arc of 2170–2130 Ma.
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Deposition: in progress between 2.14 and 2.13 Ga, with minimum age older than 1.73 Ga.
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Tectonic setting: convergent margin basin associated with juvenile magmatism.
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Crust generation along a juvenile magmatic arc around 2.17–2.13 Ga.
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Dominant source: orthogneisses of the Pouso Alegre Complex.