西南石油大学学报(自然科学版)

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Tectonic Characteristics and Evolution of Meso-Cenozoic of Sun Basin
in North Huanghai Sea

Dong Jun1, Cao Jixiang2, Li Bin2, Zhao Liping2, Li Kai2   

  1. 1. Exploration & Production Institute of Southwest Petroleum Branch Company,SINOPEC,Chengdu,Sichuan 610081,China
    2. School of Resources and Environment,Southwset Petroleum University,Chengdu,Sichuan 610500,China
  • Online:2013-06-01 Published:2013-06-01

Abstract:

By re-processing the 2D seismic data,the layer distribution and fault system of Sun Basin are analyzed in this paper
and the construction pattern of fault system in the basin is built. Two sedimentation centers are first discovered,Jupiter Depression
sedimentation center and Uranus Depression sedimentation center,respectively. According to layer and logging data,the
tectonic evolution of Meso-Cenozoic has gone through Yanshan movement and the early and late Himalayan movement. The
three evolution phases are as follows:(1)transtension to compression torsion in Yanshan movement period of late Jurassic to
early Cretaceous;(2)continuing compression torsion of early Paleogene,transtension of middle Paleogene,press and uplift of
late Paleogene in Himalayan movement period,3) regional subsiding in Neogene and Cenozoic. The results provide valuable
reference for further work of petroleum exploration.

Key words: structural evolution, north Huanghai Sea Basin, Sun Basin, faulted system