摘要
In the case of the Qikou Depression, there are three subclasses of depressions as Qinan, Qibei and Banqiao with Nandagang and Beidagang buried-hill structure belt as the boundaries and taken on the dissymmetry form with the northern side deep and steep, the southern side shallow and nearly flat. The Qikou Depression was faulted in the north and overlapped in the south. Comparative study of the sag and the structure of uplift and depression in the uplift area of western Shandong Province becomes an urgent need. From the point of view of mantle branch, the authors proposed that both the Luxi uplift and Qikou Depression had the main structural features formed through coupling of mountain and basin.