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笔者等1982年7月对位于贺兰山山前洪积扇断层崖上的探槽剖面进行了观察,发现探槽剖面中存在断层崖经几次错动所形成的几期古崩积物。此后,我们又对几个地点的古崩积楔进行了对比。现将观察结果综合报道如下。
In July 1982, the author observed the profile of the trenches located in the fault zone of the alluvial fan in front of the Helan Mountain, and found that there are several ancient tombings formed in the profile of the trenches by the several wrong movements of the faulty cliffs. Since then, we have also compared ancient accumulation wedges in several locations. The observations are now reported as follows.