Análise Morfoestrutural de um Setor da Serra da Atalaia, Analândia/Corumbataí (SP) (Morfoestructural Analysis of a Sector in Serra da Atalaia, Analândia/Corumbataí (SP))
DOI:
https://doi.org/10.5935/1984-2295.20150078Keywords:
Geomorfologia Estrutural, Análise morfoestrutural, lineamentosAbstract
O presente trabalho resulta de uma investigação sobre a influência da tectônica na estruturação do relevo em um conjunto de morros testemunhos em área de cuesta, entre as províncias geomorfológicas da Depressão Periférica Paulista e o Planalto Ocidental (região das Cuestas Basálticas). Tradicionalmente têm ocorrido divergências teóricas nas investigações sobre a evolução da área, em que uma perspectiva genética erosiva contrapõe-se a uma perspectiva tectônica. Estas divergências justificam a realização deste trabalho que, através do recorte espacial da Serra da Atalaia buscou, a partir da análise morfoestrutural, contribuir para a compreensão das implicações tectônicas cenozoicas na gênese e evolução do relevo de cuestas. A Serra da Atalaia constitui-se em um extenso testemunho do recuo da chamada cuesta interior, integrado ao interflúvio correspondente ao divisor de águas dos rios Tietê e Moji-Guaçu, entre os municípios de Analândia e Corumbataí (estado de São Paulo). Tal estudo foi realizado por meio do mapeamento da densidade de drenagem, profundidade da drenagem, clinografia e de lineamentos tectônicos que corroboraram com as proposições dos autores defensores dos elementos tectônicos, sem deixar de considerar a importância dos processos de erosão diferencial e de circundesnudação atuantes na área.
A B S T R A C T
This work is the result of an investigation of the influence of tectonics in the relief structure in a sector of Parana Basin, limit between the geomorphologic provinces of “Depressao Periferica Paulista” and “Planalto Ocidental” (“Cuestas Basalticas”) region. Traditionally there have been differences in theoretical investigations on the evolution of the area, in which a genetic erosive perspective has opposed to a tectonic perspective. These differences justify the carrying out of this work, which, through the spatial area of Serra da Atalaia sought, from the morphostructural analysis, contribute to the understanding of cenozoic tectonic implications in the genesis and evolution of the “Cuestas Basalticas” region. The Serra da Atalaia is an extensive testimony of the retreat of the so called intern cuesta, integrated to the interflow corresponding to the water divisor of the rivers Tiete and Moji-Guacu, between the cities of Analandia and Corumbatai (state of Sao Paulo). This study was carried out by the mapping of the drainage density, drainage deep, declivity and tectonic lineaments which corroborated with the authors who defends the tectonic elements, without failing to consider the importance of the differential erosion and “circundesnudacao” processes actives in the area.
Key-words: Structural Geomorphology, Morphoestructural analysis; lineaments.
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Copyright (c) 2016 Ramon Lucato de Aguilar, Cenira Maria Lupinacci Cunha

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