划分地层是地质学中一个带有基础性的问题。正确地划分地层,无论对地质学理论或找矿勘探实践,都有重大意义。传统的划分地层方法可以叫做地质分层,它主要依据古生物化石等资料,并用地质学知识来分层。这种方法当古生物化石较丰富时,或地层出现较完全时,对于分大层来说,是较可靠的方法。因此,地质分层是划分地层的基础。但是,单靠这种方法也有不足之处。首先,这种分层法依据的资料较少,资料取得也较慢,遇到 Dividing strata is a basic issue in geology. The correct division of strata, both for geological theory or prospecting exploration practice, are of great significance. The traditional stratification method can be called geological stratification. It is mainly based on the data of paleontology fossils and is stratified by geological knowledge. This method when the paleontology fossils more abundant, or strata appear more complete, for the sub-large layer, is a more reliable method. Therefore, geological stratification is the basis for stratigraphic division. However, this method alone has its own drawbacks. First of all, this method of stratification is based on less information and information obtained more slowly and encountered