Thanks for the usually excellent review of the seismotectonic setting. The entire South America Cordillera has a retrobelt, like all subduction zones, where the slab hinge is converging relative to the upper plate. This earthquake is in the right setting, also where the topography is lower, having the smaller s3 (lithostatic load), i.e., the largest differential stress. (Carminati et al. 2004 Earth Science Reviews; Doglioni et al. 2007 Earth Science Reviews)
Possibly the Guaicaramo thrust? See: The eastern foothills of the Eastern Cordillera of Colombia: An example of multiple factors controlling structural styles and active tectonics
October 2010Geological Society of America Bulletin 122(11-12)
Thanks for the usually excellent review of the seismotectonic setting. The entire South America Cordillera has a retrobelt, like all subduction zones, where the slab hinge is converging relative to the upper plate. This earthquake is in the right setting, also where the topography is lower, having the smaller s3 (lithostatic load), i.e., the largest differential stress. (Carminati et al. 2004 Earth Science Reviews; Doglioni et al. 2007 Earth Science Reviews)
Possibly the Guaicaramo thrust? See: The eastern foothills of the Eastern Cordillera of Colombia: An example of multiple factors controlling structural styles and active tectonics
October 2010Geological Society of America Bulletin 122(11-12)
DOI: 10.1130/B30033.1
Andrés Mora et al