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以大凌河隐伏断裂为实例，根据断裂位于大凌河床底部的特点，通过对比河流（ 断裂） 两侧的第四纪地层和阶地，对隐伏断裂的活动性进行研究。孢粉分析和１４Ｃ 测年数据表明，大凌河大榆树堡—凌海市段一级阶地形成于晚更新世至全新世，二级阶地形成于晚更新世，三级阶地形成于中更新世至晚更新世早期。经测量河流两侧相对应的同级阶地面处在相同的高度上，证明自晚更新世大凌河三级阶地形成以来位于大凌河床底部的隐伏断裂没有过活动。晚更新世以来这一地区的地壳平均上升速率为０－２０ ～０－２８ ｍ ｍ／ａ。
Taking the Delinghe fault as an example, based on the characteristics of the fault located at the bottom of the Daling River bed, the activity of the buried fault was studied by comparing the Quaternary strata and terrace on both sides of the river (fault). Sporopollen analysis and 14C dating data show that the first order terrace of Dayalupu-Linghai section of Dalinghe River was formed from Late Pleistocene to Holocene, the second terrace formed in Late Pleistocene, and the third terrace formed in Middle Pleistocene Late late Pleistocene. It is proved that the concealed faults located at the bottom of the Dalinghe bed since the formation of the third terrace of the Daling River in the late Pleistocene have not been active at the same height of the same level on both sides of the measured river. The average crustal rate of increase in this area since the late Pleistocene was 0-20-0-28 m / a.