According to the seal capacity of faults,each seal type can be divided into three sub-types:complete sealing,uncomplete sealing and opening.

• 岩性封闭型断层依靠对盘岩层遮挡或提供通道，根据断层的封闭能力，每大类还可分为完全封闭型、不完全封闭型和开启型3亚类，大断层以断面封闭型为主；