吐—哈盆地二叠,三叠纪地层分布及古地理格局

PERMIAN AND TRIASSIC FORMATION DISTRIBUTION AND PALAEO—GEOGRAPHICAL PATTERN OF TURPAN—HAMI BASIN

本文依据露头资料和地震资料,论述了吐—哈盆地二叠、三叠系的分布范围及沉积时的古地理面貌,认为二叠、三叠系主要分布于托克逊坳陷、哈密坳陷、博格达山前和觉罗塔格山—中央断裂之间,在二叠、三叠系沉积期间,盆地南北界山、台北南部大部分地区、了墩隆起、南部单斜带的大部分地区为剥蚀区。

The Permian and Triassic distribution and palaeogeographical landform of the Turpan-Hami basin are discussedbased on the outcrop and seismic data. The Permian and Triassic formations are mainly distributed in the Tuksun de-pression,Hami depression and Bogda piedmont and between the Jueluotak mountain and the central fault. During thePermian and Triassic sedimentation, the basin's southern and northern boundary mountains, most areas in the southof Taibei, Liaodun uplift,and most of area in the southern monocline were eroded.