Estructura de inversión tectónica en la Cordillera Oriental de los Andes, entre 23º y 24º S, Provincia de Jujuy, NO de Argentina

Abstract

The Eastern Cordillera and Subandean Ranges betwen 23" and 24" S exhibits an E-verging basement-involved reverse faults and thrusts. Most of the faults are generated by the inversion of the N-S trending extensional faults during compressional tectonics process. Structural and kinematic analysis allow us to distinguish severa1 stages dunng the compressional event. The thrust faulting started at 17 to 14 Ma in westermost tectonics units of the Eastern Cordillera and at 11Ma in eastern thrust sheets. The compressional deformation has been transferred to the Subandean Ranges at 8,5 Ma and lasted, and it probably contemporaneous with the second generation of thrust (out of sequence thrust) in the Eastern Cordillera.