Oil & Gas Geology ›› 2007, Vol. 28 ›› Issue (1): 35-42.doi: 10.11743/ogg20070105

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Tectonic evolution of Subei-South Nanhuanghai superimposed basin from the Late Mesozoic to the Cenozoic and marine petroleum potential

Ma Liqiao1,2, Chen Hanlin1, Dong Yong2, Xia Jiufeng2, Sun Fengxia2, Yang Lanying2   

  1. 1. Department of Earth Sciences, Zhejiang University, Hangzhou, Zhejiang 310027, China;
    2. Hangzhou Institute of Petroleum Geology, Exploration & Development Research Institute, PetroChina, Hangzhou, Zhejiang 310023, China
  • Received:2006-07-17 Online:2007-02-25 Published:2012-01-16

Abstract:

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.

Key words: superimposed basin, tectonic evolution, marine sequence, petroleum system, late-formed hydrocarbon accumulation, Subei-South Nanhuanghai, South China

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