Abstract: The newest seismic profile of "wide line and large array" in Kedong area is used to interpret Kedong structural belt, taking the KD-1 trap as an example, combining with the study on outcrop and drilling data. The new structural model is an imbricate structure made up of thrust fault blocks with different dips. The root of the fault blocks is extending toward the south and convergent on the reverse fault with steep basement. The frontal of the imbricate structure may be convergent on the contact interface between the Mesozoic and the Cenozoic, which causes slipping and forms thin-skinned thrust fault structure, in which the multiple fault blocks combining with related folds have shaped several traps in Kedong structural belt.

Key words: Tarim basin, Kedong structural belt, structural characteristic, fault-related fold, deformation mechanism