Abstract:The Niger delta displays the classic, well-developed zones of a large delta province with an onshore to shelfal zone of growth fault-controlled depocenters, a well-developed belt of “shale diapirs” around the outer shelf-slope area, and a fold and thrust belt in the slope area. The upper extensional zone develops different loading and the subsequent formation of large growth fault, most of which are normal and listric. A middle translational zone is dominated by mud diapirs and shale ridges beneath the upper slope. The thrust belt is characterized by oceanward verging, commonly imbricated, thrusts and folds. On the basis of the structural characteristics, we analyze the forming mechanism of the structure. We reveal the structural characteristics of the M region on the conversion zone in Niger delta, and the structure of the research area is divided into three types, based on evolution and features. On this basis, it is proposed that the main traps in the study area are tectonic-lithologic traps. This paper provides new theoretical guidance for deep water exploration in Niger delta basin.
ZHAO Jiang,WANG Qiuliang,LU Shengli et al. Structural Characteristics and Formation Mechanism of Deep Water in Eastern Niger Delta[J]. jgg, 2019, 39(7): 691-695.