Baiyinchagan depression is part of downwarping faulted rift basin developed on XingmengHercynian multicycle and collision fold basement in late Mesozoic.

• 白音查干凹陷为兴蒙海西期多旋回、软碰撞褶皱基底上晚中生代发育起来的断-坳型裂谷盆地的次级构造单元。