Timing and sources of granite magmatism in the Ribeira Belt, SE Brazil: Insights from zircon in situ U-Pb dating and Hf isotope geochemistry in granites from the São Roque Domain
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- 作者：Valdecir de Assis Janasia ; vajanasi@usp.br" class="auth_mail" title="E-mail the corresponding author ; Sandra Andradea ; Antonio Carlos B.C. Vasconcellos ; Renato Henrique-Pintob ; Horstpeter H.G.J. Ulbricha
- 关键词：Ribeira belt ; SHRIMP ; U&ndash ; Pb zircon dating ; Zircon Lu&ndash ; Hf ; Granite ; Crust evolution
- 刊名：Journal of South American Earth Sciences
- 出版年：2016
- 出版时间：July 2016
- 年：2016
- 卷：68
- 期：Complete
- 页码：224-247
- 全文大小：10648 K
文摘
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U–Pb zircon granite ages in a short range 604–590 Ma.
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Age range is ∼20–30 Ma younger than previous estimates.
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Paleoproterozoic to Archean sources dominate Hf–Nd signature.
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Hf–Nd signature indicates eastward younging of sources.