侏罗纪含煤建造既分布在塔里木盆地、准噶尔盆地及海拔最低的艾丁湖（－１５４ｍ）等地，又分布于天山山巅，而且沉积物的成熟度很高，没有盆地边缘相，显示出侏罗纪时盆地与山体的高差较小，在地理景观上呈现为板内伸展构造背景控制下的准平原地貌。这是因为研究区在空间上位于特提斯洋往北俯冲的弧后地区，在时间上处于晚古生代末，碰撞造山后的伸展作用期的缘故。 Jurassic coal-bearing construction is not only distributed in the Tarim Basin, Junggar Basin and the lowest elevation of Aiding Lake (-154m) and other places, but also distributed in the Tianshan Mountains, and the maturity of the sediment is high, there is no basin facies, showing At the time of the Jurassic, the elevation difference between the basin and the mountain was smaller, and the geomorphic landscape presented a quasi-plains land under the extensional tectonic setting within the plate. This is because the study area is located in the back arc region subducted northward from the Tethys Ocean in time, and is located at the late Paleozoic and late extensional period after collisional orogeny.