青藏高原东部玉树隆宝蛇绿混杂岩中早二叠世放射虫的发现及其地质意义  

Early Permian radiolarians from the Longbao ophiolitic mélange in Yushu Area,Qinghai-Tibet Plateau,China

作　　者：朱迎堂[1] 李建星[1] 伊海生[1] 贾全香[1] 赵仁夫[1] 孙南一[1] 张汉文[1] 周庆华[1] 

机构地区：[1]中国地质调查局西安地质矿产研究所

出　　处：《成都理工大学学报（自然科学版）》2006年第5期485-490,共6页Journal of Chengdu University of Technology: Science & Technology Edition

基　　金：中国地质调查局区域地质调查项目(20031300008);国家自然科学基金资助项目(40572077)

摘　　要：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。This paper reports the Early Permian radiolarians found from the chert of the Longbao ophiolitic mélange in Yushu, east of Qinghai-Tibetan Plateau. This radiolarian assemblage includes Latentifistula crux Nazarov et Ormiston, Pseudoalbaillella scalprata scalprata Holdsworth et Jones, Pseudoalbaillella scal prata rhornbothoracata Ishiga, Pseudoalbaillella sakrnarensis （ K ozur ） , et al. It is characterized by radiolarians and can be correlated with the Early Permian radiolarian assemblages of Hoh Xil and the West Yunnan of China. This discovery indicates that the Early Permian basin is a wide pelagic basin in the Yushu area.

关 键 词：早二叠世 放射虫 深水盆地 蛇绿混杂岩 青藏高原东部 玉树隆宝 

分 类 号：Q915.811.3[天文地球—古生物学与地层学]