Maturation-based geodynamic/geochemical classification of sedimentary basins

Abstract

Geodynamic principles and processes are combined with continental margin type basin position on a plate, and crustal type to classify sedimentary basins in a tectonic mode. Tectonic basin classifications, however, have not improved the rate of discovery of hydrocarbons or mineral deposits in sedimentary basins. To improve prediction of commercial hydrocarbon occurrence and sedimentary-hosted ore deposits, it is recommended that the proposed geodynamic basin classification could be combined with organic (petroleum) or inorganic (metals) geochemical classification systems. Organic geochemical basin classification discriminates basin types using three criteria: charge factors, migration drainage factors and impedance factors (Demaison and Huizinga, 1989a, b). A similar approach is applicable to mineral deposits. An inorganic geochemical classification is proposed that recognizes three criteria of inorganic maturation: metal solubility factor, migration drainage factor, and environmental potential for mineral precipitation. This combined geodynamic and geochemical maturation approach to basin classification should enhance resource exploration efficiency.