So the Zhangjiagou section is an ideal candidate section for erecting the terrestrial stratotype and studying the Jurassic-Cretaceous boundary in China.
The Karatag section hence is one of the possible candidates of the global stratotype of the Tournaisian-Viséan boundary.
因此，喀拉塔克剖面有可能成为全球杜内-韦宪阶界线的一个候选层型剖面。
3
One of the GSSP (Global Stratotype Section and Point) candidates for the Induan-Olenekian boundary is situated in Chaohu, central Anhui Province, southeast China.