西昆仑大红柳滩地区原划上三叠统克勒青河群中发现二叠纪化石

在西昆仑大红柳滩一带地质填图和剖面实测过程中,在原划上三叠统克勒青河群中采到了大量孢粉和珊蝴、菊石类等化石,经鉴定其时代主体为二叠纪;经区域地层对比,将其改归二叠系黄羊岭群。生物化石的发现,为该套地层时代划分提供了直接的证据,并为进一步详细研究西昆仑微陆块及巴颜喀拉晚古生代—中生代边缘裂陷盆地的地质构造演化提供了新的基础资料。

The discovery of the Permian fossils from the formerly Upper Triassic Keleqinghe Group in the Dahongliutan region,western Kunlun

Abundant fossils such as sporopollen,corals and ammonites were collected from the formerly Upper Triassic Keleqinghe Group in the Dahongliutan region,western Kunlun in 2003 to 2005.These fossils are mostly traced back to the Permian,and thus the Group is redivided into the Permian Huangyangling Group.The discovery of theses fossils may provide direct evidence and new information for the regional stratigraphic classification and the examination of the geological and tectonic evolution of the Tianshuihai microcontinent and the Bayan Har Late Palaeozoic-Mesozoic marginal rift basin.