西藏谢通门春哲地区发现中二叠世地层

The discovery of Middle Permian strata in Chunzhe area Xietongmen,Tibet

通过西藏春哲地区1∶5万区域地质调查,在西藏谢通门北部春哲地区新发现一套整合于下拉组(P_(1x))的钙质碎屑岩岩石组合,并首次获得中二叠世Yatsengia珊瑚化石,地层剖面位于谢通门县春哲乡北部白察不拉一带;通过剖面岩石组合、接触关系、古生物化石资料及区域对比,认为该套岩石组合应单独建组,为进一步完善冈底斯中段古生代地层系统及盆地演化的研究提供了新的资料。

During the 1：50000 regional geological survey in Chunzhe area of Tibet, first discovered the Calcareous clastic rock combination that is in conformity with the Xiala Formation on the north of the Chunzhe area,Xietongmen,Tibet. Also first achieve the Yatsengia coral fossils, which lived in Middle Permian. And the geological section locates in Baichabula. Author insist that the rock combination should be established a new formation alone by contrast with the geological section＇s rock combination, the contact relationship, the date of paleontological fossil and the area.It provides new data for the further improvement of the Palezoic stratigraphic system and basin evolution in middle of Gangdise.