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Landscape evolution of Sapucaí River Basin - MG: relationships between long-and short-term dynamics of geological time

Grant number: 14/14702-0
Support type:Scholarships in Brazil - Doctorate
Effective date (Start): March 01, 2015
Effective date (End): February 28, 2018
Field of knowledge:Physical Sciences and Mathematics - Geosciences - Physical Geography
Cooperation agreement: Coordination of Improvement of Higher Education Personnel (CAPES)
Principal Investigator:Peter Christian Hackspacher
Grantee:Daniel Henrique de Souza
Home Institution: Instituto de Geociências e Ciências Exatas (IGCE). Universidade Estadual Paulista (UNESP). Campus de Rio Claro. Rio Claro , SP, Brazil
Associated scholarship(s):16/10014-7 - Denudation rates in the Brazilian southeastern from measuring of cosmogenic isotope 10Be, BE.EP.DR

Abstract

This project falls within the new possibilities for studies of landscape evolution in the long term, due to advances in the last decades of dating techniques of geological and geomorphological events and estimates denudation rates. In this sense this paper proposes the use of techniques that together cover different time scales to understand the evolution of the relief of the Sapucai River Basin, on the border between the states of Minas Gerais (south) and São Paulo (northeast), location extremely affected by large regional events in southeastern Brazil that occurred after Wealdeniana Reactivation in the Mesozoic, especially the formation of the Cenozoic Rift of Southeastern Brazil, in the Paleogene. Thus, the low-temperature thermochronology by analysis of apatite fission track and systematic (U-Th) / He aims determination of major events modelers landscape on the scale of tens to hundreds of millions of years and their roles in regional topographic compartmentation while the measurement of in-situ production of cosmogenic isotope 10Be, aided morphometric indices applied in the drainage network, check to what extent these large compartments being preserved or destroyed by the dynamics of the Quaternary. (AU)