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Application of petrochronology in the reconstruction of P-T-t (pressure-temperature-time) paths of the northern Borborema Province during the Neoproterozoic

Grant number: 16/25987-0
Support type:Scholarships in Brazil - Post-Doctorate
Effective date (Start): June 01, 2017
Effective date (End): August 31, 2019
Field of knowledge:Physical Sciences and Mathematics - Geosciences
Cooperation agreement: Coordination of Improvement of Higher Education Personnel (CAPES)
Principal Investigator:Ricardo Ivan Ferreira da Trindade
Grantee:Caue Rodrigues Cioffi
Home Institution: Instituto de Astronomia, Geofísica e Ciências Atmosféricas (IAG). Universidade de São Paulo (USP). São Paulo , SP, Brazil
Associated research grant:16/06114-6 - The Neoproterozoic Earth System and the rise of biological complexity, AP.TEM
Associated scholarship(s):18/07892-8 - Monazite, titanite and zircon LA-ICP-MS petrochronology of the northern Borborema Province, BE.EP.PD

Abstract

The long duration of mountain building and collapse processes makes geochronology of orogenic systems very challenging. These processes can last for tens of millions of years and, therefore, a correct interpretation of geochronological data depends on linking the obtained ages to pressure-temperature conditions. These correlations allow age determinations of the different orogenic stages, being very powerful tools in paleogeographic reconstructions. The ages can be linked to pressure-temperature conditions by a combination of several techniques, including textural analysis, thermodynamic modelling, geochronology and geochemistry. This approach, known as petrochronology, is a relatively new science that has been increasingly growing over the few last decades mainly as a result of the developments in in-situ mineral analysis techniques. The aim of this project is to apply the petrochronology to determine the P-T-t paths of the metasedimentary rocks of the Seridó Group and associated orthogneisses in the northern Borborema Province. The timing of pressure and temperature conditions of the orogen will be determined through a combination of thermodynamic modelling and textural, geochronological and geochemical data of zircon, monazite, titanite and garnet, which will be obtained in-situ by electron microprobe and laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS). In this way, it is intended to contribute to the understanding of the Neoproterozoic tectonic evolution of the Borborema Province, during the agglutination of western Gondwana, using a cutting-edge approach. (AU)

Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
CIOFFI, CAUE RODRIGUES; CAMPOS NETO, MARIO DA COSTA; MOLLER, ANDREAS; ROCHA, BRENDA CHUNG. Titanite petrochronology of the southern Brasilia Orogen basement: Effects of retrograde net-transfer reactions on titanite trace element compositions. LITHOS, v. 344, p. 393-408, NOV 2019. Web of Science Citations: 0.

Please report errors in scientific publications list by writing to: cdi@fapesp.br.