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西藏申扎一带石炭纪地层发育完整,出露良好,化石丰富,是西藏中部石炭系标准剖面所在地,为一套以碳酸盐岩和碎屑岩为主的浅海、滨海相沉积。1957年王文彬等将上古生界自下而上划分为他(塔)尔玛岩系、沙龙列丁岩系和米酒雄岩系,统称为石炭二叠系。1978年西藏地质局综合地质普查大队一分队伦珠和加措等在申扎县永珠附近实测剖面,将石炭系中、下统划分为永珠群上组和下组,上统命名为昂杰组。1981年7月中国地
The Carboniferous strata in the Xhenza area, Tibet, are well-developed, well-exposed and rich in fossils. They are located in the central part of the Carboniferous in central Tibet, and are characterized by a set of shallow sea and coastal sea facies mainly composed of carbonate rocks and clastic rocks. In 1957, Wang Wenbin et al. Divided the Upper Paleozoic into his (tower) Elma, Salonelidian and Miquity rock series, collectively known as Permo-Carboniferous. In 1978, the Geological Survey of Tibet Geological Survey team unit Lunzhu and Canada measures such as measured near the section of Yongzhu County in Shenzha profile, the Carboniferous middle and lower division is divided into the group of upper and lower Wing group, the upper named Ang Jie group. July 1981 in China