Petrology of a Subduction-related Caldera and Post-Collisional, Extension-related Volcanic Cones from the Early Cambrian and Middle Ordovician (?) of the Camaquã Basin, Southern Brazil*

Almeida, Delia Del Pilar Montecinos de; Hansen, Marco Antônio Fontoura; Fensterseifer, Henrique; Petry, Karla; Lima, Larissa de

doi:10.1016/s1342-937x(05)71005-4

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Mineralogy and Petrography1

Camaquã Basin Volcanism-tectonic Environment -Conclusion1

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2005

2019

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Cited by 3 publications

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“…Plagioclase and euhedral quartz crystalloclasts (<2%) are dispersed in the tuffaceous, partially glassy matrix. Almeida et al (2000Almeida et al ( , 2003aAlmeida et al ( and 2003b Table 12. Geochemical analysis of the major, trace and Rare Earth elements .…”

Section: Mineralogy and Petrographymentioning

confidence: 99%

“…Thus, these declivities can be formed due to basin different subsidences. Almeida et al (2002Almeida et al ( , 2003aAlmeida et al ( , 2003bAlmeida et al ( and 2005 based on Brazilian Orogeny evolution pattern from Chemale Jr. (2000); considered that the Acampamento Velho Formation was generated in an extensional regime preceding the Rio de la Plata and Kalahari continental plate collisions. The Rodeio Velho Member may correspond to the late magmatic manifestation and may have occurred after the collisional phase between Rio de la Plata (with Encantadas Microcontinent attached) and Kalahari Continental Plate.…”

Section: Camaquã Basin Volcanism-tectonic Environment -Conclusionmentioning

confidence: 99%

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