Isotopic U-Pb and Hf in zircon and whole rock Sm/Nd and Pb/Pb data applied to granitic rocks of Sierras Pampeanas, (Argentina)

• Grant number: 12/50906-3
• Support Opportunities: Regular Research Grants
• Start date: January 01, 2013
• End date: December 31, 2014
• Field of knowledge: Physical Sciences and Mathematics - Geosciences - Geology
• Agreement: CONICET
• Principal Investigator: Mario da Costa Campos Neto
• Grantee: Mario da Costa Campos Neto
• Principal researcher abroad: Juan Andres Dahlquist
• Institution abroad: Universidad Nacional de Córdoba (UNC), Argentina
• Host Institution: Instituto de Geociências (IGC). Universidade de São Paulo (USP). São Paulo , SP, Brazil
• Associated research grant: 10/11152-8 - Tectonics of Brasília orogen at Southern margin of São Francisco Craton: a paleogeographic, metamorphic and structural perspective, AP.R

Abstract

The evolution and provenance of the crustal materials formed at the southwestern edge of Gondwana is the main purpose of this Project. The role of crustal recycling during the Ordovician magmatism of the Famatinian Orogen and also the geodynamic model for the magmatism of the Middle-Upper Devonian to Mississippian in Pampean Orogen are the main targets. The Paleozoic magmatic rocks from Cordilheira Frontal (Carboniferous granites) to the Sierras Pampeanas, between the parallels 27ºS and 33ºS, will be systematically sampled along a E-W geological transects. The petrogenesis of these magmatic rocks will be achieved combining Hf and U-Pb ages in zircon with whole rock Sm-Nd and Pb-Pb data. (AU)