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.