Аннотация:Detached folds in the Monterrey salient of the Sierra Madre Oriental fold-and-thrust belt, México, show macro- and mesostructures that demonstrate a change of the regional maximum principal stress from NNE-SSW to approximately E-W compression, during the late stages of the Laramide event. Data were collected along a N-S trending section in the central part of the Monterrey salient. Paleostresses were determined by means of fault slip data inversion. These estimates where corroborated with those from meso-scale structures. Macro and mesostructures suggest that mechanisms of folding are mainly flexural shear and orthogonal flexure at both local and regional scales. The change...
