The third order sequences are named in ascending order as Lp1, Lp2, Lp3, Lp4, Lp5 and Lp6. Precise correlation of these sequences among these three sections is realized, with aid of renewed biostratigraphic data.

• 结合原有和最新的生物地层资料，对这3个剖面的层序地层划分实现了精确对比，从而将原有地层对比精度提高了1倍。