Later-stage block uplift formed new fault scarp, the previous pediment surface and the wide valley were uplifted, and the gully started retrogressive erosion from the scarp to produce a terrace.
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美
- 后期的断块隆升形成新的断层崖,原先的麓原面和宽谷被抬升,冲沟从断层崖开始溯源侵蚀形成阶地。