The discovery of Ordovician-Devonian biotas and strata provide new important evidence for the stratigraphic division and correlation and the study of the tectonic evolution of the Qiangtang area.
羌南地区奥陶纪—泥盆纪生物和地层的发现，为与邻区地层划分对比和探讨羌塘构造演化提供了重要依据。
The uranium mineral resources are contained in Neogene Period basins of this region, there are still some doubtful points in these basins about their stratigraphic division and correlation.
区内晚第三纪盆地含铀矿资源，而盆地的地层划分和对比尚存在不少疑议。
The discovery of these large vertebrate fossils has great significance for the redefinition of the stratigraphic age and regional stratigraphic division and correlation of the area.
这些化石的发现对重新厘定地层时代、进行区域地层划分及对比具有重要意义。
It is shown that the stratigraphic division and correlation are effective and have high precision according to the characteristics of each stage of the community succession.
它们都是群落演替和取代的特殊阶段，所以，根据群落演替的各个阶段能比较精确地划分和对比地层。
Quaternary stratigraphic division and correlation in the two sub-areas is discussed in detail.
论述了两个沉积小区的岩石地层的划分和对比。
The stratigraphic division and correlation of the Ordovician in the two districts have long been an outstanding problem.
两个分区奥陶系的划分和对比，是一个长期未决的问题。
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。
The paper has demonstrated corresponding problems concerned stratigraphic division and correlation of coal seams by utilization of logging data.
本文就综合利用测井资料对地层划分、煤层对比等相关问题进行了阐述。
The former was identicle with the age of adjacent strata in North China stratigraphicarea, which was conductive to regional stratigraphic sub-division and correlation;
前者与华北地层区内相邻地层在年龄上衔接，有利于区域地层划分与对比；
The former was identicle with the age of adjacent strata in North China stratigraphicarea, which was conductive to regional stratigraphic sub-division and correlation;
前者与华北地层区内相邻地层在年龄上衔接，有利于区域地层划分与对比；
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