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龙门山南段五龙断裂带为一条200m~1000m宽的推覆韧性剪切带。断裂构造岩以糜棱岩和构造片岩为主;根据构造岩及其显微构造、超微构造特征,认为该断裂带为上盘相对向上剪切运动,自北西向南东推覆的产物;其形成深度为16km~20km,温度为450℃~550℃,压力为450MPa~530MPa,古差异应力值为100MPa~106MPa,应变速率为1.3×10-10m/s;为高温、高应变条件下形成。
The Longmen Shannan Wulong fault zone is a ductile ductile shear zone with a width of 200m ~ 1000m. According to the tectonic rocks and their microstructures and ultrastructural features, the fault tectonic rocks are mainly mylonites and tectonism. According to the tectonic rocks and their ultrastructural features, the fault zones are considered as the products of upward shearing movement of the upper plate from the NW to the NE in the east; The formation depth is 16km ~ 20km, the temperature is 450 ℃ ~ 550 ℃, the pressure is 450MPa ~ 530MPa, the ancient differential stress is 100MPa ~ 106MPa and the strain rate is 1.3 × 10 ~ 10m / s. Under formation.