There exist Jurassic and Cretaceous basins in the Beishan-Alaxa area.The Jurassic basins are controlled by near EW-trending faults, and the faulted basins extend in EW direction.

• 摘要研究区发育侏罗纪盆地和白垩纪盆地，侏罗纪盆地受近东西向断裂的控制，为东西向展布的断陷湖盆。