Continuous disproportionate growth of Gubei fault formed the palaeogeomorphology of Gubei slope belt with groove alternating with roof and with abrupt and gentle change.

• 孤北断层持续不均衡发育形成孤北斜坡带沟梁相间、陡缓变化的古地貌,古地貌控制了隐蔽圈闭的平面分布。