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长期来,省内地质工作者多认为尼山地区是一个穹窿构造,并把它作为鲁西旋卷构造的砥柱。作者以野外调查的实际资料为基础,从各方面论证了尼山地区不是一个穹窿构造,它既不是太古代的古隆起,也不是古生代的水下隆起,而是中生代的一个断块凸起,未发生过相对的旋扭活动,不可能成为旋卷构造的砥柱。因而指出所谓鲁西旋卷构造的说法是难以成立的。就整个鲁西而言,其基本的构造格架,乃是在NW、NEE两组断裂组成的棋盘格的基础上,迭加上其它方向的断裂共同形成的“×”型断裂体系。鲁西各个中新生代盆地及其侏罗记以来的沉积,泰山、新甫山、蒙山和尼山等断块山系的形成,中新生代的岩浆活动及其有关的矿产,鲁西诸多石炭二迭纪煤田的分布,都受“×”型断裂体系所控制。
For a long time, many geologists in the province think that the Nishan area is a dome structure and treats it as the mainstay of the Luxi spiral volume structure. Based on the actual field investigation data, the author argues that the Nishan area is not a dome structure. It is neither an ancient paleo-uplift nor a paleo-uplift of the Paleozoic, but a bulge of the Mesozoic, No relative twisting activity has taken place and it can not be the mainstay of the spiral structure. Thus pointed out that the so-called Luxi spiral structure is difficult to say. For the entire Luxi, its basic tectonic framework is based on the checkerboard consisting of two NW and NEE faults, superimposed with the “X” type fracture system jointly formed by faults in other directions. Various Mesozoic-Cenozoic basins and their deposition since the Jurassic, the formation of fault blocks such as Taishan, Xinfushan, Mengshan and Nishan, the Meso-Cenozoic magmatism and its related mineral resources, The distribution of the Permian coalfield is controlled by the “×” type fault system.