Inicio Del Antepais Andino En Cordillera Oriental (24°35´ S - 66°12´ O): Deformación Paleogena?.

DEL PAPA, C.; HONGN, F.; IVAN ALEJANDRO PETRINOVIC; DOMÍNGUEZ, R.

Revista de la Asociación Geológica Argentina

Año: 2005 vol. 59 p. 506 - 509

0004-4822

ABSTRACT. Evidence of pre-Middle Miocenedeformation associated with the Andean foreland of the Eastern Cordillera (24°35´ S - 66°12´ W). An angular unconformity between Paleogene post-rift strata (Salta Group) and the synorogenic Andean record (Payogastilla Group) is described in the northernmost Calchaquí valley. Stratigraphical and structural studies lead to its interpretation as representing a pre-Middle Miocene deformation event which could represent one of the earliest stages in the Central Andean foreland evolution in the southern area of the Eastern Cordillera of north-western Argentina.Evidence of pre-Middle Miocenedeformation associated with the Andean foreland of the Eastern Cordillera (24°35´ S - 66°12´ W). An angular unconformity between Paleogene post-rift strata (Salta Group) and the synorogenic Andean record (Payogastilla Group) is described in the northernmost Calchaquí valley. Stratigraphical and structural studies lead to its interpretation as representing a pre-Middle Miocene deformation event which could represent one of the earliest stages in the Central Andean foreland evolution in the southern area of the Eastern Cordillera of north-western Argentina.An angular unconformity between Paleogene post-rift strata (Salta Group) and the synorogenic Andean record (Payogastilla Group) is described in the northernmost Calchaquí valley. Stratigraphical and structural studies lead to its interpretation as representing a pre-Middle Miocene deformation event which could represent one of the earliest stages in the Central Andean foreland evolution in the southern area of the Eastern Cordillera of north-western Argentina.