Zircon U-Pb geochronology, Sm-Nd and Pb-Pb isotope systematics of Ediacaran post-collisional high-silica Acampamento Velho volcanism at the Tupanci area, NW of the Sul-Rio-Grandense Shield, Brazil

Zircon U-Pb geochronology, Sm-Nd and Pb-Pb isotope systematics of Ediacaran post-collisional high-silica Acampamento Velho volcanism at the Tupanci area, NW of the Sul-Rio-Grandense Shield, Brazil

ABSTRACT: We present new U-Pb zircon ages and Sm-Nd-Pb isotopic data for volcanic and hypabyssal acid rocks from the northernmost exposure of the Acampamento Velho Formation in the NW portion of the Sul-Rio-Grandense Shield, Brazil. The first volcanic episode, grouped in the high-Ti rhyolites from t...

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Bibliographic Details
Main Authors: Carlos Augusto Sommer, Felipe Padilha Leitzke, Evandro Fernandes de Lima, Carla Joana Santos Barreto, Jean Michel Lafon, Vinicius Matté, Ruy Paulo Philipp, Rommulo Vieira Conceição, Miguel Ângelo Stipp Basei
Format: Article
Language:English
Published: Sociedade Brasileira de Geologia
Series:Brazilian Journal of Geology
Subjects:
Volcanism
Acampamento Velho Formation
Camaquã Basin
Tupanci
Geochronology
Online Access:http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2317-48892017000400545&lng=en&tlng=en

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