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Quaternary sedimentary record of Parnaíba river basin, Piauí, Northeastern Brazil: a multi-proxy study for climate changes research

Grant number: 13/21942-4
Support Opportunities:Scholarships in Brazil - Doctorate
Effective date (Start): March 01, 2014
Effective date (End): November 30, 2016
Field of knowledge:Physical Sciences and Mathematics - Geosciences - Geology
Principal Investigator:Paulo César Fonseca Giannini
Grantee:Vinícius Ribau Mendes
Host Institution: Instituto de Geociências (IGC). Universidade de São Paulo (USP). São Paulo , SP, Brazil


The Serra da Capivara National Park (UNESCO World Heritage Site) region has great archaeological record left by one of the earliest human occupations in the Americas, as well as paleontological ones, related to the abundant remains of the Pleistocene megafauna.Researches on these themes have been developed in the region since the creation of the park in the 1970s. The semi-arid climate of the region, as it is currently described, has motivated disbelief regarding the antiquity of the human occupation (over 20,000 years old) in the area.However, few studies have focused on climatic and environmental evolution throughout the Late Quaternary, the scenario of this human occupation. Therefore, the purpose of this project is to use a multi-proxy approach to study the Quaternary record of lacustrine and fluvial deposits, within the park boundaries and also on a larger scale, including the marine deposits of the Piauí continental shelf, in order to reconstitute the evolution of the regional depositional systems and paleoclimate as completely as possible.Granulometry, heavy minerals, LOE sensitivity, stable isotopes and palynomorphs are the principal among the various environmental indicators to be explored. It is expected that this reconstitution allows interpretations of archaeology and Quaternary paleontological remains, helps improve existing models of climate evolution in South America and serves as a basis for the planning of socio-economic activities and the management of this drought-beset region.

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Scientific publications
(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)
MENDES, VINICIUS R.; SAWAKUCHI, ANDRE O.; CHIESSI, CRISTIANO M.; GIANNINI, PAULO C. F.; REHFELD, KIRA; MULITZA, STEFAN. Thermoluminescence and Optically Stimulated Luminescence Measured in Marine Sediments Indicate Precipitation Changes Over Northeastern Brazil. PALEOCEANOGRAPHY AND PALEOCLIMATOLOGY, v. 34, n. 8, p. 1476-1486, . (13/21942-4, 18/15123-4, 09/53988-8)
ANDRÉ OLIVEIRA SAWAKUCHI; VINICIUS RIBAU MENDES; FABIANO DO NASCIMENTO PUPIM; THAYS DESIREE MINELI; LIGIA MARIA ALMEIDA LEITE RIBEIRO; ANDRE ZULAR; CARLOS CONFORTI FERREIRA GUEDES; PAULO CÉSAR FONSECA GIANNINI; LUCIANA NOGUEIRA; WILLIAM SALLUN FILHO; et al. Datação de sedimentos brasileiros por luminescência opticamente estimulada e termoluminescência isotérmica do quartzo: do Holoceno tardio ao Plioceno?. BRAZILIAN JOURNAL OF GEOLOGY, v. 46, p. 209-226, . (14/14433-9, 14/06889-2, 09/53988-8, 14/23334-4, 13/21942-4)
Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
MENDES, Vinícius Ribau. Registro sedimentar quaternário na bacia do Rio Parnaíba, Piauí: um estudo multi-indicadores voltado à investigação de mudanças climáticas. 2016. Doctoral Thesis - Universidade de São Paulo (USP). Instituto de Geociências (IG/BT) São Paulo.

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