Yi-Shu fault is a lithosphere fracture belt with a long history, which formed a rift fracture system by the effect of the Kula plate and the Pacific plate movement during Mesozoic.

• 沂沭断裂带是一条岩石圈断裂,有着悠久的演化历史,在中生代受库拉板块和太平洋板块运动作用,发展成为裂谷式断裂系统。