The role of bedrock and climate for the Late Quaternary erosive-depositional behavior of an intraplate tropical river: The Tietê River case, southeastern Brazil
| Autor: | André Oliveira Sawakuchi, Caio Breda, Fabiano do Nascimento Pupim, Thays Desiree Mineli |
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| Rok vydání: | 2021 |
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| Zdroj: | Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual) Universidade de São Paulo (USP) instacron:USP |
| Popis: | The evolution of fluvial systems has been related to tectonics and climate controls across various spatiotemporal scales. Despite the growing efforts to investigate the effects of those controls in the fluvial dynamics, there is a lack of studies in intraplate tropical regions. Here, we applied geomorphological, sedimentological, and optically stimulated luminescence dating (OSL) techniques to investigate the effects of climate and tectonic factors on the evolution of the Upper and Middle Tiete River during the late Quaternary, especially concerning alluvial aggradation and terraces formation. The Tiete River is one of the most important rivers of southeast Brazil, flowing from crystalline steep to sedimentary low-relief intraplate terrains, in an area with evidence of Cenozoic tectonics and under tropical monsoon climate. We recognized one fluvial terrace level in the Upper Tiete valley and a sequence of seven terraces, from 2 to 105 m above the channel level, in the Middle Tiete. These terraces are formed by thin deposits ( |
| Databáze: | OpenAIRE |
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