| verage cooling rates of 4-10;Detailed structural mapping in the Maqu area suggests that the total crustal shortening in the Linzizong Formation is about 15-25%, and the minimum shortening in the Cretaceous Takena Formation and older sediments is about ;A major low-angle ductile shear zone at the southeastern edge of the Nyainqentanglha Range shows kinematic criteria that consistently indicate a top-to-SE sense of shear. FT and ;A substantial E-W striking and N-dipping ductile shear zone was found in the Quxu area, just north of the Indus-Zangbo suture. Kinematic indicators suggest a top-to-north sense of shear. This shear zone is interpreted as a N-S extensional fault in the upper crust, and its origin is probably similar to that of the younger, large-scale, E-W trending low-angle normal faults documented in the Higher Himalayas to the south of the suture zone.;An eruptional age of 50... |
