Resumen de Tectónica reciente del sistema de fallas de Domeyko, Salar de Punta Negra (antearco Andes Centrales, norte Chile)
R. Soto Marín, J. Martinod, Rodrigo Riquelme, Gérard Hérail, Laurence Audin
We study the recent tectonic activity in a sector of the Precordillera in the Andean forearc analysing aerial photographs, satellite images and fieldwork data. The interpretation of alluvial landforms, drainage organisation and evolution o f intermittent river networks downcutting post-Miocene deposits allow us to recognize tectonic processes. All these geomorphic markers indicate no strike-slip offsets, but successive and small tectonic pulses that reactivate previous structures originated under a transpressive context. The observed deformational pattern could be related to the small tilting of the Chilean forearc coinciding with an important episode of uplift of the Altiplano-Puna.
