Cargas corticales y subcorticales en cuencas intermontanas e intracratónicas, y sus influencias en la historia de subsidencia

FEDERICO MIGUEL DAVILA; ASTINI, R. A.

Mar del Plata

Congreso; VI Congreso de Exploracion y Desarrollo de Hidrocarburos; 2005

In the Central Andes, supracrustal tectonic loading has been extensively invoked to explain retroarc flexure and foreland basin subsidence. However, we present surface and subsurface stratigraphic data from the Sierras Pampeanas broken foreland, Argentina, that suggest a long-wavelength subsidence pattern, likely driven by processes occurring in the upper mantle or lower crust. Short-wavelength flexure driven by various factors enhances regional subsidence features.