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万州特有的阶梯状地貌特征是万州地区河流地貌演化及水平地层特殊地质环境共同作用的结果,通过系统的野外地质调查、勘探和资料收集,结合2008年堰塘的湖中钻探,对该堰塘沉积物进行系统取样与分析,并进行了沉积物年龄与成分的测定.结果表明山湾陡崖的崩塌与阶地抬升及区域构造运动一致.绘制了山湾滑坡崩塌堆积物各期次沉积剖面,共分为10个崩塌旋回.结合沉积物测年,研究了山湾滑坡体沉积物沉积速率,得出了山湾危岩陡崖后退速率为0.31～0.37m/ka.
Wanzhou unique step-like landform features are the result of rivers and geomorphic evolution in Wanzhou area and the special geologic environment of horizontal strata. Through the systematic field geological survey, exploration and data collection, combined with the lake drilling in weir in 2008, Sediments were systematically sampled and analyzed, and the age and composition of sediments were determined.The results show that the collapsing of the cliffs in Shanwan is consistent with the uplift of terrace and regional tectonic movement.The sedimentary sections of landslides in Shanwan landslide are plotted, The sediment deposition rate of the Shanwan landslide body is studied based on the sediment dating, and the regression rate of the steep cliffs in the Shanwan dangerous rock is 0.31 ~ 0.37m / ka.