Role of subaerial Large Igneous Provinces in modulating environmental and climatic changes during the Proterozoic rise of atmospheric oxygen in Brazil

• Grant number: 19/17732-0
• Support Opportunities: Scholarships abroad - Research Internship - Post-doctor
• Start date: December 01, 2019
• End date: November 30, 2020
• Field of knowledge: Physical Sciences and Mathematics - Geosciences - Geology
• Principal Investigator: Pascal Andre Marie Philippot
• Grantee: Francesco Narduzzi
• Supervisor: Delphine Bosch
• Host Institution: Instituto de Astronomia, Geofísica e Ciências Atmosféricas (IAG). Universidade de São Paulo (USP). São Paulo , SP, Brazil
• Institution abroad: Université Montpellier 2, France
• Associated to the scholarship: 18/14617-3 - Time constraints, redox conditions and sediment sources attending the Proterozoic rise of atmospheric oxygen in Brazil, BP.PD

Abstract

The Great Oxidation Event (GOE, ~ 2.5 - 2.2 Ga) and the Neoproterozoic Oxidation Event (NOE, ~ 0.85 - 0.54 Ga) record the time when the Earth's became O2-rich. These two periods were coeval with the emplacement of sub-aerial Large Igneous Provinces (LIPs) and at least 3 glacial events, some of which of global extent (Snowball Earth). Despite the geological evidence through at least five continents, a causal relationship between atmospheric oxygenation, LIPs emplacement and global cooling is still debated due to poor age constraints and contradictory stratigraphic correlation between sedimentary sequences in separate cratons. This is particularly crucial for Paleo- and Neoproterozoic sedimentary successions of Brazil, which are not considered in global reconstruction. Recent numerical modelling and Nd isotope analyses of sedimentary rocks spanning the GOE and NOE showed a possible connection between LIPs activity, ice age and oxygenation. The goal of this BEPE project is to combine Nd and Hf isotope systematics on black shales, siliciclastic rocks, carbonates and iron formations of the Paleoproterozoic Carajás Mineral Province (Parà state) and the Neoproterozoic Jacadigo Group (Mato Grosso do Sul state). These low metamorphic sedimentary sequences, which were deposited during the GOE and NOE, respectively, represent ideal candidates to constrain the possible causal relationships between LIPs emplacement, atmosphere oxygenation and global glaciation attending the GOE and the NOE. (AU)

Scientific publications

(4)

(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)

ROSSIGNOL, CAMILLE; REGO, ERIC SICILIANO; NARDUZZI, FRANCESCO; TEIXEIRA, LIVIA; AVILA, JANAINA N.; SILVA, MARCO A. L.; LANA, CRISTIANO; PHILIPPOT, PASCAL. Stratigraphy and geochronological constraints of the Serra Sul Formation (Carajas Basin, Amazonian Craton, Brazil). Precambrian Research, v. 351, DEC 2020. (19/16066-7, 19/17732-0, 18/14617-3, 19/12132-5, 18/02645-2, 15/16235-2, 18/05892-0)

SCHANNOR, MATHIAS; LANA, CRISTIANO; MAZOZ, ARIELA; NARDUZZI, FRANCESCO; CUTTS, KATHRYN; FONSECA, MARCO. Paleoproterozoic sources for Cordilleran-type Neoproterozoic granitoids from the Aracuai orogen (SE Brazil): Constraints from Hf isotope zircon composition. LITHOS, v. 378, DEC 15 2020. (15/16235-2, 18/14617-3, 19/17732-0)

ROSSIGNOL, CAMILLE; ANTONIO, PAUL YVES JEAN; NARDUZZI, FRANCESCO; REGO, ERIC SICILIANO; TEIXEIRA, LIVIA; SOUZA, ROMARIO ALMEIDA DE; SILVA, MARCO A. L.; LANA, CRISTIANO; TRINDADE, RICARDO I. F.; PHILIPPOT, PASCAL; et al. Unraveling one billion years of geological evolution of the southeastern Amazonia Craton from detrital zircon analyses. GEOSCIENCE FRONTIERS, v. 13, n. 5, p. 24-pg., 2022-08-26. (15/16235-2, 18/05892-0, 19/16066-7, 18/02645-2, 18/14617-3, 19/17732-0, 19/12132-5, 17/18840-6)

NARDUZZI, FRANCESCO; BOSCH, DELPHINE; PHILIPPOT, PASCAL. Evolution of seawater continentally-sourced Nd isotopic composition prior to and during the Great Oxidation Event. Precambrian Research, v. 362, AUG 15 2021. (15/16235-2, 18/14617-3, 19/17732-0)