渤海湾盆地是在北西、北东两组断裂切割的前第三系基底上发育起来的断陷盆地。箕武断陷是盆地的基本结构,它是基岩块体不断旋转的结果。引起基岩块体旋转的根本原因是郯-庐断裂带右旋平移派生的拉张力的作用,在这一拉张力的作用下,盆地地壳伸展变薄。这种变薄作用是通过基底断裂的滑动,断块体的旋转来实现的。 The Bohai Bay Basin is a faulted basin developed on the pre-Tertiary basement of Northwest and North East faults. Keowu rift basin is the basic structure of the basin, which is the result of continuous rotation of bedrock blocks. The basic reason for the rotation of bedrock blocks is the pull-pull effect derived from the right-hand translation of the 郯-Lu fault zone. Under the action of this tensile force, the crustal extensibility is thinned. This thinning effect is achieved by the sliding of the fracture of the base, the rotation of the block.