Discovery of Triassic Sporopollen Assemblage in the Sailiyakedaban Area, Southern Yecheng County, Xinjiang

The Saliyakedaban area, southern Yecheng County, Xinjiang is situated in the Western Kunlun Mountains, where field geological survey and research are greatly difficult, because natural conditions of this area are very bad, and transportation is inconvenient. The determination of the stratigraphic age of the Sailiyakedaban Group was mainly based on Neocalamites sp., Eumorphotis sp. and Claraia sp., but no evidence of microfossils has been obtained. Sporopollen assemblage of Limatulasporites,Alisporites was found in the Sailiyakedaban Group recently, which provides important basis for the determination of the age of the Sailiyakedaban Group, stratigraphic division and correlation in the West Kunlun orogen and research on the geological evolution in the Mazar-Kangxiwar suture zone.