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Several types of sedimentary basin classifications have been proposed all around the world, before and after the onset of the Plate Tectonic Theory, and some of them were applied, to the Brazilian basins, principally Klemme's classiflcation. ln 1983, Exxon geologists Kingston, Dishroon and Williams published their Global Basin Classification System where to each basin a formula was atributed, reflecting its tectonic and sedimentary evolution. The components of this formula are coded by letters and numbers representing stages of forming tectonics, modifying tectcnics and also the sedimentary package that fills up the basins. Therefore, this classification system, in contrast with previous ones, allows a fast evaluation of the petroleum potencial of sedimentary basins, as well as the characterization of fundamental differences among them. Some of the most representative Brazilian petroleum-bearing basins are discussed in details in this paper using the Kingston's classification system. Also a general picture of the ln situ hydrocarbons volumes, discovered in the Brazilian basins, is displayed according to this classiflcation. These data are compared with the published ones by Kingston and co-workers based upon 800 basins of the world. |
