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2000•Journal of PetrologyOpen access

Early Cretaceous Basaltic and Rhyolitic Magmatism in Southern Uruguay Associated with the Opening of the South Atlantic

Linda A. Kirstein, D.W. Peate, Chris J. Hawkesworth, Simon Turner, Chris Harris, Marta Sílvia Maria Mantovani

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Abstract

The Early Cretaceous volcanic rocks of southern Uruguay comprise KEY WORDS: South America; flood basalts; felsic volcanics; crustal melts; mafic and felsic volcanics.The position of these outcrops at the plume southern edge of the Parana ´-Etendeka continental flood basalt province provides an opportunity to investigate possible lateral variations in both mafic and more evolved rock types towards the margins of such an area of plume-related magmatism.The mafic

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The Early Cretaceous volcanic rocks of southern Uruguay comprise KEY WORDS: South America; flood basalts; felsic volcanics; crustal melts; mafic and felsic volcanics.The position of these outcrops at the plume southern edge of the Parana ´-Etendeka continental flood basalt province provides an opportunity to investigate possible lateral variations in both mafic and more evolved rock types towards the margins of such an area of plume-related magmatism.The mafic

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Available abstract

The Early Cretaceous volcanic rocks of southern Uruguay comprise KEY WORDS: South America; flood basalts; felsic volcanics; crustal melts; mafic and felsic volcanics.The position of these outcrops at the plume southern edge of the Parana ´-Etendeka continental flood basalt province provides an opportunity to investigate possible lateral variations in both mafic and more evolved rock types towards the margins of such an area of plume-related magmatism.The mafic

Key concepts: Mafic, Geology, Felsic, Geochemistry, Basalt, Flood basalt, Volcanic rock, Rhyolite

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