Oil & Gas Geology ›› 1997, Vol. 18 ›› Issue (1): 7-14.doi: 10.11743/ogg19970102

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HIGH RESOLUTION SEQUENCE STRITIGRAPHIC FRAMEWORK IN CRETACEOUS,SONGLIAO BASIN

Wei Kuisheng1, Xu Huaida1, Ye Shufen1, Guo Zhanqian2, Xu Hong2, Ren Yanguang2, Wang Yuhua2   

  1. 1. China University of Geosciences, Beijing;
    2. Reaserch Institute of Petrolum Exploration and Development, Daqing Petroleum Administration, Daqing, Heilongjiang
  • Received:1995-05-30 Revised:1995-12-03 Online:1997-03-25 Published:2012-01-18

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Abstract:

Based on the fundamental principle of sequence stratigraphy,the storm wave base or offlap break of initial highstand delta system could be regarded as the reference for the"shelf break"in passive margin. Accoring to well log and seismic sections of sequence boundaries in cores,seven supersequences and 47 sequences are identified,and high resolution sequence stratigraphic framework is built in Cretaceous of Songliao Basin.The periods for the supersequences and sequences are about 11.29 Ma and 1.28 Ma respectively. To compare the curves of rise and fall of both the base level and sea level in Songliao Basin,their secondary cyclic variation tendencies are the same,but the frequency of third cyclic variation of the former is higher.This is caused mainly by the factors of local tectonics and complicated climate.