西藏林周旁多地区晚古生代层序地层特征

通过详细的层序地层研究，重建了冈瓦纳大陆北缘石炭－二叠纪层序地层序列，在详细的岩相，准层序研究的基础上，划分出2个二级层序和11个三级层序。研究区的含砾细碎屑岩系滨岩浅水冰筏（或浮水）沉积物经密度流再搬运到深水区的产物。旁多群上部滨岸河流相沉积层序的发现，为石炭－二叠纪冰期研究提供了新的沉积岩石学资料。

Characteristics of C-P Sequence Stratigraphy in Northern Margin of Gondwana Land--Exemplified by Pangduo Profile, Linzhou, Tibet

The sequence stratigraphy of Carboniferous Permian in the northern Gondwana land was reconstructed through detailed studies, which can then be divided into 2 second order sequences and 11 third order sequences. It is the turbidity that transported the glacial marine sediments from littoral area to the deep basin. The discovery of fluvial facies in the lower part of the Laigu Formation suggests that there was no deposition in the study area during the late Carboniferous, and this gives new information to the study of Carboniferous Permian glacial cycles.