１９７９年第二届全国地层会议以来近二十年间，我国地层研究工作取得了一系列突破性进展，大部分地区的地层研究进一步深化，地层空白区和研究的薄弱领域正逐步缩小，一大批重要新发现为解决地层划分与对比的关键问题奠定了坚实基础，积累了更为丰富的实际资料。但在取得... In the recent two decades since the Second National Stratum Conference in 1979, a series of breakthroughs have been made in stratigraphic research in China. Stratigraphic research has been further deepened in most areas, and the weak areas in stratigraphic blankets and research are gradually narrowing down. A large number of important The new discoveries have laid a solid foundation for solving the key issues of stratigraphic division and comparison and have accumulated a wealth of actual data. But after getting ...