Cuencas de la región Precordillerana

ASTINI, R.A.; ASTINI, R., DÁVILA, F.M., LOPEZ GAMUNDI, O., GOMEZ, F.J., COLLO, G., EZPELETA, M., MARTINA, F., ORTIZ, A.AVILA, F.M., ; LOPEZ-GAMUNDI, O.,; GOMEZ, F.J.; COLLO, G.; EZPELETA, M; MARTINA, F.; ORTIZ, A.

Frontera Exploratoria Argentina

Actas VI Congreso de Exploración de Hidrocarburos

Año: 2005; p. 115 - 145

This work provides an up-to-date synthesis of the stratigraphic framework of the Argentine Precordillera from its earliest history during the early Paleozoic into the most recent Andean foreland. According to its stratigraphic record six main evolutionary stages can be outlined: 1) a basal Laurential-like passive marging stage, 2) a first Ordovician peri-Gondwana foreland basin stage, 3) a second Siluro-Devonian "Malvinokaffric foreland basin stage, 4) a third more extended Gondwanan Carbonifeours_permian foreland, including the first broken foreland toward the pampean craton, 4) a stage of back-arc extension and protracted unroofing, and 6) a final Andean foreland stage with development of at least two different styles; an early assymetric flexural wave and a later broken foreland affecting the more external cratonward region.