stratigraphic time division的意思|示意

There have been different opinions on the Lower Cretaceous stratigraphic division of the Dongsheng area, on the northeastern margin of Ordos Basin for a long time.

鄂尔多斯东北缘东胜地区下白垩统的地层划分一直存在分歧。

All these studies on solving the unity of stratigraphic division and correlation and the evolution of sedimentary facies in time and space in whole of South China Sinian is of significance.

这些研究对解决整个南方震旦纪地层划分对比的统一及沉积相的时空演化具有重要意义。