Magnetic stratigraphy of Araras Group: paleoenvironmental and paleogeographic implications

• Grant number: 17/11590-4
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: August 01, 2017
• End date: July 31, 2018
• Field of knowledge: Physical Sciences and Mathematics - Geosciences - Geophysics
• Principal Investigator: Ricardo Ivan Ferreira da Trindade
• Grantee: Caio Augusto Deiroz Amaral
• Host 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

Abstract

This project will provide new paleomagnetic data in the Edicaran-Cambrian interval for carbonates from the Araras Group (Mato Grosso State, Brazil) and recently discovered equivalent units in Rondonia State in order to test paleogeographic configurations for the Gondwana and test the hypothesis for the end of the extreme Neoproterozoic glacial events. Paleomagnetic samples were already collected in Tangara da Serra (MT) and Espigão d'Oeste (RO) comprising around 60 stratigraphic levels, and included fold tests to investigate the testability of magnetic components. The proposed research is part of a wider effort to reconstruct Earth's paleogeography and define its relation with the dramatic environmental changes (climate, atmosphere and ocean composition) that preceded the appearance of multicelular organisms. (AU)