Análisis 2D de subsidencia en la Cuenca Neuquina (República Argentina): un caso de superposición de mecanismos de subsidencia en cuencas marginales

• J.R. Franzese ^[1] ; Ramón Salas ^[2] ; M. Muravchik ^[1]
  1. [1] Universidad Nacional de La Plata

     Universidad Nacional de La Plata

     Argentina

     
  2. [2] Universitat de Barcelona

     Universitat de Barcelona

     Barcelona, España

     
• Localización: Geotemas (Madrid), ISSN 1576-5172, Nº. 6, 2, 2004 (Ejemplar dedicado a: IV Congreso Geológico de España), págs. 145-148
• Idioma: español
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• Resumen

  • The Upper Triassic to Lower Cretaceous subsidence history of the Neuquén Basin has been investigated through a forward and reverse basin-modelling technique. Geometry of extension and ?-factor obtained in the backstripped model are not coincident with the forward model, suggesting a complex and asymmetric subsidence pattern. The effect of a flexural load derived from the growth of the Andean magmatic arc during the post-rift stage was added resulting in a more accurate picture of the post-rift stratigraphic evolution of the basin. We suggest that this type of subsidence history could be typical for the Mesozoic Andean marginal basins.