Carta sedimentólogica da plataforma continental brasileira - área Guamaré a Macau (NE Brasil), utilizando integração de dados geológicos e sensoriamento remoto

Abstract

Studies carried on the Brazilian continental shelf are little developed, especially on the northeastern Brazil, and particularly on Rio Grande do Norte State. This work intends to organize the existent information about the sediment cover on the NE Brazilian continental shelf, and to elaborate a sedimentological chart. The used methodology integrated the sedimentological data with remote sensing processing stored on a georeferenced bank. Ten main facies were mapped on the studied area. Siliciclastic sands are present on shallow waters, near the coast, while carbonate sands are present offshore. The muds are present in the mouth of the rivers and filling channels on the shelf. The sediment cover is one of the most important parameters to understand de shelf system as a whole, because they reflect geological and hydrodynamic processes, present and past, and define, together with others variables, the kind of biological community installed