“依希伯拉岩系”系1955年地质矿产部631队5分队堪义睿同志创建的。他把盆地东北缘自依希伯拉陡坎向东延至克拉美丽地区的煤窑、老君庙、孔雀坪一线以南和沙漠以北广泛分布而出露零星的红色地层,都划归该岩系。岩系的岩性为砖红色泥岩,砂质泥岩夹少量厚层钙质砂岩,砾砂岩。最厚达100米左右,连续最大厚度不超过50～60米。产状近于水平,不整合在侏罗系的不同层位和古生代基岩之上。631队将该岩系的地质时 “According to the Ebara rock series” Department of Geology and Mineral Resources in 1955 631 team of 5 points comrade created a comrade. He put the northeastern margin of the basin from the east along the Heiborgh Ridge eastward to the coal mines in the beautiful Kala region, scattered widely to the south of the Laojun Temple and the north of the Peacock Ping and scattered sporadic red stratums, all of which are assigned to the rock series . The lithology of the rock series is brick red mudstone with a small amount of thick calcareous sandstone and gravel sandstone sandstone sandstone. The maximum thickness of about 100 meters, the maximum continuous thickness of not more than 50 to 60 meters. Nearly the level of production, unconformity in different layers of the Jurassic and Paleozoic bedrock above. 631 team will be the geology of the rock series