The Early to Middle Jurassic Shuixigou Group in Turpan-Hami basin is a series of coal measure strata with a thickness of 2000m.

• 摘要吐哈盆地中下侏罗统水西沟群是一套厚达2000m的河沼-湖沼相煤系地层，其中的煤岩及暗色泥岩是已发现油气藏的主要源岩。