E. Moosavi
Abstract
Some structural evidences of continental transpression are studied and compared with experimental modeling results in the Birk area. These evidences are: fold axes have a double plunging en-echelon pattern. Fold axes mean orientations and fracture cleavages strike form angles less than 45 degrees with ...
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Some structural evidences of continental transpression are studied and compared with experimental modeling results in the Birk area. These evidences are: fold axes have a double plunging en-echelon pattern. Fold axes mean orientations and fracture cleavages strike form angles less than 45 degrees with the boundary faults. Strike-slip faults have an en-echelon and domainal pattern. Synthetic P Shears are more abundant than synthetic R shears. Flat tension vein (and normal faults) planes lie at a high-angle with respect to folds axes and this condition proposes some amounts of hinge-parallel extensions. Inclined dextral layer-parallel detachment faults and related structures such as asymmetric dextrally verging minor folds, traspressional and trastensional faults and large-scale half flower structures are other structural features of dextral transpression. It is believed that partitioning of dextral component of wrench-dominated continental transpression is due to reactivation of N-S striking basement faults in late Neogene.