Paisagem natural paleógena da bacia sedimentar de São Paulo no município de Guarulhos, Estado de São Paulo.

AUTOR(ES)
DATA DE PUBLICAÇÃO

2008

RESUMO

Sedimentary rocks of Cenozoic age, composed primarily of sand and clays, can be found in the city of Guarulhos, located in the metropolitan area of the city of São Paulo, State of São Paulo, Brazil. Paleogene sediments of this region represent a significant source of water for urban, industrial and agricultural activities. This basin is an integral part of the Southeastern Brazilian Continental Rift, which occupies a large portion of this geographical area. This study aims to present the evolution of the natural Paleogene landscape, through an analysis of its stratigraphic outcrops and underground portions based on the concept of facies and facies associations. A total of 9 clastic and separate lithofacies were recognized and grouped in two main fácies associations. These data suggest the existence of two depositional interdigitated systems: fluvial braided fans, which were predominant in parts of the northern and central area, and another composed of lacustrine sediments found in its central-south region. The paleogeography herein outlined will help considerably in the detection of new areas for mineral and water resources prospection, as well as in urban planning projects of this region.

ASSUNTO(S)

paleogene. guarulhos geologia ambiental neotectônica guarulhos paleógeno. neotectonic estratigrafia stratigraphy

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