哈密坳陷二叠纪—三叠纪原型盆地恢复及沉积中心演化特征

Permian-Triassic prototype basin restoration and depocenter evolution feature in Hami Depression

本文主要根据野外露头资料、地震资料及钻井资料,运用平衡剖面法、地震地层法、地层对比法、邻近厚度比值法及沉积速率比值法计算哈密坳陷二叠系—三叠系地层剥蚀厚度,在残余地层厚度的基础上,恢复哈密坳陷二叠系—三叠系原始地层厚度,进而对哈密坳陷二叠纪—三叠纪原型盆地进行恢复,探讨其沉积中心的演化过程。

On the basis of field outcrop, seismic and well data, Permian-Triassic strata erosion thickness of Hami Depression can be calculated by means of balanced section, seismic stratigraphy, horizon comparison, proximity thickness ratio and deposition rate. Accordingly, the Permian-Triassic original formation thickness can be recovered. Consequently the Permian- Triassic prototype basin of Hami Depression can be recovered and its depocenter evolution is also discussed in the paper.