Tectónica reciente del sistema de fallas de Domeyko, Salar de Punta Negra (antearco Andes Centrales, norte Chile)

• R. Soto ^[2] ; J. Martinod ^[2] ; R. Riquelme ^[1] ; G. Herail ^[2] ; Laurence Audin ^[2]
  1. [1] Universidad de Chile

     Universidad de Chile

     Santiago, Chile

     
  2. [2] Université P. Sabatier
• Localización: Geotemas (Madrid), ISSN 1576-5172, Nº. 6, 3, 2004 (Ejemplar dedicado a: IV Congreso Geológico de España (Zaragoza, 12-15 julio, 2004)), págs. 199-202
• Idioma: español
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• Resumen

  • 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.