山东省沂沭断裂带(郯城—庐江大断裂中段)自1957年航空物探发现以来,已引起一些地质专家的关注,有关报道、著作为数不少。但对断裂带的性质,却各说不一,有的认为主要是差异垂直运动所引起的正断裂(于丕休,1961);有的持平移运动论,而且认为左旋平移距相当大(徐嘉炜,1964,1968);有的认为属中生代白垩纪大陆裂谷(许志琴等,1978,)。 Since the discovery of aero-geophysics in 1957, the Yishu fault zone (middle part of Tancheng-Lujiang fault) in Shandong Province has attracted the attention of some geological experts. However, the nature of the fault zone varies, and some think it is mainly the normal fracture caused by the differential vertical movement (Yu-Hugh, 1961). Some hold the theory of translational motion and consider that the left-lateral translational distance is rather large (Xu Jiawei , 1964, 1968); some consider the Mesozoic Cretaceous Continental Rift (Xu Zhikin et al., 1978).