From sand grains to mountain chains: linking recent Andean orogenesis and climate changes to the assembly of lowland Amazonia (PAALE)

• Grant number: 22/03007-5
• Support Opportunities: Research Grants - Initial Project
• Start date: May 01, 2023
• End date: April 30, 2028
• Field of knowledge: Physical Sciences and Mathematics - Geosciences - Geology
• Principal Investigator: Fabiano do Nascimento Pupim
• Grantee: Fabiano do Nascimento Pupim
• Host Institution: Faculdade de Filosofia, Letras e Ciências Humanas (FFLCH). Universidade de São Paulo (USP). São Paulo , SP, Brazil
• Associated researchers: André Oliveira Sawakuchi ; Bodo Bookhagen ; Camila Cherem Ribas ; Cristiano Mazur Chiessi ; Daniel Henrique de Souza ; Diana Ochoa ; Gelvam André Hartmann ; Lúcia Garcez Lohmann ; Mauricio Parra Amézquita ; Patrice Baby ; Pedro Fonseca de Almeida e Val ; Renato Paes de Almeida ; Victor Hugo Garcia ; Willem Viveen
• Associated scholarship(s): 24/14730-5 - Mapping and geomorphological characterization of fluvial terraces in the Upper Juruá River, southwestern Amazon: an approach based on Digital Elevation Models., BP.IC; 24/00560-0 - A LONG TIME AGO! - A PROPOSAL FOR SCIENTIFIC COMMUNICATION ON THE GEOLOGICAL EVOLUTION OF THE AMAZON, BP.JC; 24/00551-1 - A LONG TIME AGO! - A PROPOSAL FOR SCIENTIFIC COMMUNICATION ON THE GEOLOGICAL EVOLUTION OF THE AMAZON, BP.JC; + associated scholarships 23/16318-1 - Spatial distributions of sediment provenance and erosion rates of modern deposits in eastern Andean Cordillera and their relationship to natural controls, BP.MS; 23/16001-8 - The erosion and sediment flux response to late Quaternary hydroclimate change quantified using in situ cosmogenic nuclides and optically stimulated luminescence., BP.DR; 23/16031-4 - Paleoerosion rates and sediment flux along the Amazon fluvial system in response to Andean tectonism and regional climate regimes during the late Neogene and Pleistocene, BP.DR; 23/10430-4 - Paleogeographic reconstruction of the middle Negro River during the Quaternary: a geomorphological-geochronological approach, BP.MS - associated scholarships

Abstract

The uplift of the Andes has been recognized as a key driver of South America climatic regimes and lowland Amazonian landscapes, whose changes through time were directly or indirectly crucial to Amazonia becoming the most diverse continental ecosystem on Earth. However, the timing, rates, and mechanisms that link the recent growth of the Andes (ca. 10Ma) to regional climate and physical landscape in the Amazonian lowlands remain poorly understood. Here, we will reconstruct the spatiotemporal trends of erosion rates and sediment flux from the Andes to the Amazonian lowlands using cosmogenic nuclides, luminescence signals, and magnetic parameters. Therefore, we will investigate a unique and comprehensive set of spatially distributed surface sedimentary deposits, as well as deep and continuous sediment cores that will be drilled in strategic sites at western (Acre Basin), central (Solimões Basin), and eastern (Marajó Basin) Amazonia, under the "Trans-Amazon Drilling Project (TADP)" and Ocean Drilling Program (ODP). Our records will provide original insights into (1) how the history of uplift and erosion of the world's longest mountain chain is stored in the world's largest river basin; (2) how orbital and millennial-scale hydroclimate variability affects erosion rates and sediment flux from Andean and cratonic terrains within the Amazon; (3) how the mountain erosion signal is transformed from its source to the ocean, the ultimate sink in the system; and (4) a potentially transformative history of uplift and climate change in Amazonia's lowland physical landscapes and its influence on biotic diversification over the last 10 Ma, a period when most extant species originated. In addition, this project will allow the outstanding training of students and scientific development through exchange among national and international research institutions from Brazil, Germany, and Peru. (AU)

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)

BREDA, CAIO; PUPIM, FABIANO N.; CRUZ, CAROLINA BARBOSA LEITE; SOUZA, PRISCILA EMERICH; MONSALVE, GASPAR; CARDONA, AGUSTIN; SAWAKUCHI, ANDRE OLIVEIRA; PARRA, MAURICIO. Variation in the ITCZ position controls the evolution of the piedmont landscape of the tropical Andes (Colombia) during the late Quaternary. Geomorphology, v. 462, p. 14-pg., 2024-07-17. (20/11047-1, 18/23899-2, 22/03007-5, 21/14022-2, 21/14947-6)

SOUZA, P. E.; PORAT, N.; SAWAKUCHI, A. O.; CRUZ, C. B. L.; BREDA, C.; RODRIGUES, F. C. G.; OLIVEIRA, S. C.; PUPIM, F. N.. Using quartz OSL signals from SAR cycles for sediment provenance studies. QUATERNARY GEOCHRONOLOGY, v. 83, p. 8-pg., 2024-06-27. (20/11047-1, 18/23899-2, 22/05520-1, 23/16031-4, 22/03007-5, 21/14022-2, 21/14947-6)