剥蚀沉积规律在地层划分中的应用

Application of Denudation and Sediment Rules in Formation Partition

在考虑不同构造层之间剥蚀与沉积变化关系的基础上,认识到剥蚀沉积规律的存在。对沾车地区构造特征进行了认真分析认为,不论哪个潜山,也不论哪个构造部位,它们都应当遵循该规律。提出潜山遭受风化剥蚀的时间越长,残存地层越老越薄,上覆盖层则越新越薄;反之,潜山遭受风化剥蚀的时间越短,残存地层越新越厚,上覆盖层则越老越厚。应用该认识在检验划分结果、指导地层划分方面具有重要意义。

After considering the relations of denudation and sediment presented on different conformations, analyzing the structural characteristics of Zhan-Che area, the conclusion is that the same denudation rule is applied to the different underground massifs and the different structural positions. To the formation of underground massif, the longer weathering denudation period is, the older the remained formation is, the younger the overburden rock. On the contrary, the shorter weathering denudation period is, the younger the remained formation and the older the overburden rocks. This paper specifies the important significance of the denudation rule applying to checking and directing formation partition.