Based on comprehensive study on tectonic stress field

structural feature

and sedimentary formation

the tectonic evolution of Subei-South Nanhuanghai(North Jiangsu-Southern South Yellow Sea) superimposed basin since the late Triassic plate collision between the Huanan plate and Huabei plate can be divided into the following four stages: ① the foreland basin development stage under the influence of the late Triassic to Middle Jurassic paleo-Tethyan closing;② the thrust nappe development stage controlled by the Late Jurassic-Early Cretaceous oblique subduction of Izanagi oceanic plate;③ the basin extension development stage under the in-fluence of the late Cretaceous-Paleogene subduction of the Pacific plate

including the late Cretaceous depression development stage and Paleogene fault depression basin development stage;④ the depression development stage under the influence of Neogene Himalaya orogenesis.In relation to the development of the Paleogene half-graben-like fault depression

this paper focuses on the controlling effects of the left-lateral strike-slip and pul-lingapart movement along with the NWW basement faults and of the NE thrust nappe over the development of the basin and half graben-like fault depression

and points out the exploration prospect of marine petroleum system from the aspect of sedimentation

reworking

and preservation.