The Niger Delta is located on the eastern passive continental margin of the South Atlantic Ocean. The delta body consists a large gravity-gliding tectonics. The SinoPec´s Cameroon block is a petroleum exploration block on the southeastern side of the gravity-gliding tectonics. Both fault and shale tectonics are well developed in this block. The faults in this block include the normal faults induced by the trail extension of the gravity gliding tectonics, the tear faults induced by the shear between the gravity gliding tectonics and the original rocks and the faults induced by the shale diapir. Stock and wall are the two types of the shale tectonics in this block. The shale-stocks in the western part of the block were formed by the active shale diapir. The shale-walls in the middle-eastern part of the block were formed by the passive shale diapir controled by the tear faults. The gravity tectonics related faulting initiated in the Middle Miocene, and accelerated in Pliocene and Quaternary respectively. Each faulting accelerating stage accompanied with shale diapir activities. One shale diapir activity accompanied with the middle Miocene faulting, two with the Pliocene and Quaternary faulting respectively.
Su Yushan Chen Zhankun Li Yuejun Zhao Yan Li Cheng Zhao Wei Zhao Tianyu. The faults and shale tectonics in the southeastern flank of the Niger Delta large scale gravity gliding tectonics[J]. Chinese Journal of Geology, 2020, 55(2): 615-625.