西藏北部永珠蛇绿岩带晚侏罗世—早白垩世日拉组、日拉组索尔碎屑岩及生物群特征

The Late Jurassic-Early Cretaceous Rila Formation,Rila Formation Suor clastic rocks and characteristics of biotas in the Yun zhug ophiolite belt,northern Tibet

在开展藏北多巴区幅1∶25万区域地质调查时,在申扎地区永珠—雄梅—果芒错一带发现了一套沿永珠蛇绿岩带(?)分布,岩性特征及成因环境较为特殊的晚侏罗世—早白垩世地层,建立了日拉组及日拉组索尔碎屑岩单位。

When the Jilin Institute of Geological Survey carried out 1∶250000regional geological survey of the Toiba Sheet in northern Tibet,it found a sequence of Late Jurassic-Early Cretaceous strata in the Yunzhug-Xungmai-Gomang Co area,Xainza County.This sequence is distributed along the Yunzhug ophiolite belt(?)and characterized by special lithological characteristics and genetic environment.On that basis the authors established the Rila Formation and Rila Formation Suor clastic rocks.