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Paleomagentic and anisotropy of magnetic susceptibility (AMS) study of the 1752 ma acid rocks from the Novo Horizonte Formation (Bahia)

Grant number: 19/05509-5
Support Opportunities:Scholarships in Brazil - Scientific Initiation
Effective date (Start): June 01, 2019
Effective date (End): May 31, 2021
Field of knowledge:Physical Sciences and Mathematics - Geosciences - Geophysics
Principal Investigator:Manoel Souza D'Agrella Filho
Grantee:João Pedro Rodriguez Pinto
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

The objective of this Project is to perform the paleomagnetic and anisotropy of magnetic susceptibility (AMS) study of acid volcanic, subvolcanic, pyroclastic and epiclastic rocks (rhyolites, ignimbrites and dacites) from the Novo Horizonte Formation, situated in the Bahia State (São Francisco Craton). These rocks are associated to the initial Espinhaço rifting, occurred at about 1750 Ma. The main purpose of this study is to determine a key paleomagnetic pole for the São Francisco Craton for this age, and compare it with coeval paleomagnetic poles from other cratonic units (e.g., Amazonian Craton, Laurentia, Baltica and North China) in order to establish the paleogeography of these units during the formation of the Columbia supercontinent.

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