The structural evolution of Tangyuan Fault Depression shows that: its Mesozoicbasin is overridden by its Cenozoic basin; the Cenozoic fault controlled the boundaryof the depression and the depression is a passive rift basin.

• 通过对依-舒地堑构造演化研究认为汤原断陷中生界盆地与新生界盆地为叠置关系,断裂在新生界时期表现为控盆断裂,断裂性质为张剪性,断陷属于被动性成盆机制所控制的被动型裂谷盆地。