Baiyinchagan Depression Locates in Chuanjing sub-basin of Erlian Basin, is a residual growth of Mesozoic half-graben fault depression overlaying Hercynian Fold.

• 白音查干凹陷位于二连盆地川井坳陷,是发育在海西褶皱基底之上的中生界残留箕状断陷。