论文部分内容阅读
报道了采自青藏高原东部玉树隆宝蛇绿混杂岩硅质岩岩块中的放射虫化石。该放射虫组合包括Latentifistula cruxNazarov et Ormiston,Pseudoalbaillella scalprata scalprataHoldsworth et Jones,Pseudoalbaillella scalprata rhombothoracataIshiga,Pseudoalbaillellasakmarensis(Kozur)等。该放射虫组合属于Pseudoalbaillella scalprata rhombothoracata带,该带可以进行全球对比,地质时代为早二叠世。放射虫动物群与可可西里、滇西等地的古特提斯放射虫组合一致,它指示了玉树早二叠世存在深水沉积盆地。
The radiolarian fossils collected from the siliceous rocks of the Longbao ophiolitic mélange in the eastern part of the Qinghai-Tibet Plateau are reported. The radiolarian assemblage includes Latentifistula crux Nazarov et Ormiston, Pseudoalbaillella scalprata scalprata Goldsworth et Jones, Pseudoalbaillella scalprata rhombothoracata Ishiga, Pseudoalbaillellasakmarensis (Kozur), and the like. The radiolarian assemblage belongs to the Pseudoalbaillella scalprata rhombothoracata zone, which can be globally compared to the Early Permian geologic age. The radiolarian fauna is consistent with the assemblages of the ancient Tethys radiolabe in Hoh Xil, Western Yunnan and other places, indicating the existence of deep-water sedimentary basins in the Early Permian of Yushu.