Estructura y evolución de la faja plegada y corrida del Agrio

ROJAS VERA, E.; MESCUA, J. F.; FOLGUERA, A.; SAGRIPANTI, L.; FENNELL, L.; ORTS, D.; RAMOS, V.A.

Tucumán

Congreso; XX Congreso Geológico Argentino; 2017

Asociación Geológica Argentina

From the integration of surficial, geophysical and well data, three structural cross-sections were constructed (with more than 100 km of length each) covering the entire Agrio fold and thrust belt. Each structural cross-section was restored yielding 10 km of shortening. In order to achieve a better understanding of the kinematics involved in the growth of the fold and thrust belt, fission track analysis were performed over the inner part of the fold and thrust belt. Thermal modeling of the samples shows two well recognized events. The first event started in the latest Cretaceous and extended up to Eocene times, while the second event was recognized in late Miocene times. These results are consistent with the spatial distribution of the Malargue Gruop which would have been deposited when most of the fold and thrust belt was already structured, considering the Neogene exhumation a reactivation of mainly former structures.