As an important part of continental rift lacustrine basin,the structural zones of the basin margin which are usually located close to the hydrocarbon-generating center,are important petroliferous belts in the continental rift lacustrine basin.In the Bohai Sea area,the structural styles of the Paleogene lacustrine basin margin can be divided into two types:extensional lacustrine basin margin and strike slipping lacustrine basin margin and the former one is further subdivided into the steep slope faulted lacu...