Geodynamics, magmatism, and Paleoproterozoic (2.1-1.87 Ga) epithermal and porphyry-type base and precious metals mineralization at the Southern Amazonian Craton

• Grant number: 22/10177-4
• Support Opportunities: Regular Research Grants
• Start date: March 01, 2023
• End date: February 28, 2025
• Field of knowledge: Physical Sciences and Mathematics - Geosciences - Geology
• Agreement: CONFAP - National Council of State Research Support Foundations
• Principal Investigator: Caetano Juliani
• Grantee: Caetano Juliani
• Host Institution: Instituto de Geociências (IGC). Universidade de São Paulo (USP). São Paulo , SP, Brazil
• Associated researchers: André Pires Negrão ; Cleyton de Carvalho Carneiro ; Lena Virginia Soares Monteiro ; Reiner Neumann ; Vinicius Hector Abud Louro

Abstract

This project enables the continuity of the scientific collaboration between researchers from USP and UFPA, which has been taking place since the 2000s, for the development of joint and multidisciplinary research on Paleoproterozoic volcanic events and magmatic-hydrothermal mineralizing systems (Au-Cu-Mo) in the southern portion of the Amazon craton. The project focuses the largest felsic volcanism event in the world (> 1.5 M km2), which has a remarkable level of preservation of volcanic systems and mineralization, especially in the Tapajós region, and characterize a geological setting that can provide unique scientific data and contributions in the world for a better understanding of the Paleoproterozoic geodynamics, mantle-crust interaction, petrogenesis and metallogenesis. The project proposes the integration and treatment of geological, sedimentological, geochemical, isotopic, geochronological and geophysical data, compiled and to be acquired in this project, by different methods, including analysis of geological/geophysical information using artificial intelligence. As a result, a geodynamic model is expected to be proposed for the generation of Paleoproterozoic magmatic arcs and their relationships with the metallogenesis of magmatic-hydrothermal mineral systems. Characterizing the spatial and temporal distribution of magmatic arcs, orientations of subduction zones, processes of volcanic caldera formation, ages of mineralizing events and their relationships with fertile magmatic events should also contribute to the optimization of resource use and orientation of mineral exploration in the region. Thus, the project might provide important subsidies for the search for metals needed for the energy transition, contributing to the socioeconomic development of the Para state and the Brazilian nation. (AU)