...-gas content rises continuously, whereas the adsorption gas content first increases and then approaches the equilibrium value or even tends to decrease slightly. Based on the foregoing results, the target layer, the Yengisar Formation, is predicted to possess an enormous amount of shale gas potential...

... ). Within the Lower Jurassic Yengisar Formation along the Kuqa and Yengisar transects (Tarim basin), over 300 m of sand-rich braided fluvial deposits were observed ( Figure 2 ) ( Hendrix et al., 1992 ). Coal-bearing strata in central Xinjiang are divided into several formations by Chinese stratigraphers...

... Formation consists primarily of greyish brown sandstones and conglomerates intercalated with greyish green and dark grey mudstones, with a total thickness reaching 548 to 592 m. The Middle Triassic Karamay Formation is mainly composed of dark grey, greenish grey and black mudstones and grey siltstones...

... . Zhang , W. , and Li ., Y. , 1990 , Sporopollen assemblage of Ahe, Yengisar, and Kezilenuer Formations in Baicheng County, Xinjiang : Xinjiang Geology , v. 8 , p. 256 - 268 . Zhang , X. , 1981 , Regional stratigraphic chart of northwestern China, Branch of Xinjiang Uygur Autonomous...