Stratigraphy, the basis of geological dating was founded in the ⅩⅦ century on the three well known principles assumed......

作为地质年代测定的基础是史泰侬(Stenon)于17世纪提出的三原则,即:叠加、连续性和原始水平性.这些原则又源于一项沉积学假设:土壤......