“纳赤台群”系指青藏线格尔木至昆仑山口间的一套浅变质的地层,1959年由青海省地质局石油普查大队命名,时代统以 Pz_(1+2)表示之。1972年青海省地质局区测队,在温泉幅(1/100万)报告中将“纳赤台群”的南界划在昆仑湖到秀沟一线,将该线以南出露 “Nai Chihtai Group ” refers to a set of shallow metamorphic strata between Golmud and Kunlun Mountain Pass of Qinghai-Tibet Railway. It was named as the oil census brigade of Qinghai Province Geological Bureau in 1959, and the era is represented by Pz_ (1 + 2). In 1972, the Geological Survey team of Qinghai Province mapped the southern boundary of “Nachihtai Group” in Kunlun Lake to Xiuqiu Line in the report of Hot Spring Banner (1/1000000), exposing the south of the line