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Interdisciplinary Pleistocenic reconstitution of lake deposits of Serra Sul of Carajás, Southeastern Amazon region

Grant number: 15/25744-8
Support type:Scholarships in Brazil - Doctorate
Effective date (Start): April 01, 2016
Effective date (End): March 31, 2020
Field of knowledge:Physical Sciences and Mathematics - Geosciences - Geology
Principal researcher:Luiz Carlos Ruiz Pessenda
Grantee:Luiza Santos Reis
Home Institution: Centro de Energia Nuclear na Agricultura (CENA). Universidade de São Paulo (USP). Piracicaba , SP, Brazil
Associated research grant:11/00995-7 - Interdisciplinary paleoenvironmental studies in the Espirito Santo State coast, AP.PFPMCG.TEM
Associated scholarship(s):17/20062-1 - Late Quaternary hydroclimatic reconstruction based on compound-specific hydrogen isotope ratios in lake sediments, southeastern Amazonia, BE.EP.DR

Abstract

The integration of chronological characterization tools as C-14 dating, sedimentologic, conventional and isotopic geochemistry and palynology, is extremely important in studies on the landscape evolution and the dynamic of paleovegetation, with climate inferences. In order to enlighten paleoclimate issues in the Amazon, a sedimentary testimony of ~ 10 m depth will be collected in an active lake in Serra Sul Carajas, Southeastern Amazon region, where it is expected to characterize a record of palaeoenvironmental and paleoclimatic changes in the last ~ 100,000 years B.P. For such a purpose, faciologic, isotopic (delta 13C, delta 15N) and C/N data will be used in conjunction with pollen and spores and charcoal macro-fragments data, which will provide unique information about the sedimentary processes, sources of organic matter, vegetation patterns and dynamics of paleofires, allowing a more accurate reconstitution of paleoenvironmental changes and of paleoclimatic inferences.

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