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Geoscience ›› 2005, Vol. 19 ›› Issue (Suppl): 32-36.

• Engineering Geology and Environmental Geology • Previous Articles     Next Articles

APPLICATION OF THE ESR AGE OF QUARTZ IN THE SEQUENCE STRATIGRAPHIC ANALYSIS—AN EXAMPLE FROM WELL YI 3-7-7 IN JIYANG DEPRESSION

ZHAO Yong1,2, CAO Ying-chang3, YANG Wei-li1   

  1. 1Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou,Guangdong510640,China;
    2Shengli Oil Production Plant,Shengli Oilfield Company Limited, Dongying,Shandong257015,China;
    3    University of Petroleum, Dongying, Shandong257061,China
  • Received:2004-09-14 Revised:2004-10-30 Online:2005-03-20 Published:2013-04-08

Abstract:

Es3-Es2 in the Shahejie Formation of well Yi3-7-7  in Jiyang depression can be divided into three 3rd order sequences. Sequence 1 corresponds to the lower stage of Es3, sequence 2 to the middle stage of Es3, sequence 3 to the period of the upper stage of Es3. Based on the dense sampling and the ESR age of quartz of 88 blocks, this paper has built the relationship between the sequence stratigraphic framework and the ESR age. The duration of a 3rd order sequence is from 1 Ma to 4 Ma, while a para-sequence is from 13,000 to 200,000 years. The duration and sedimentation rate differ during the each stage of a 3rd order sequence. In the early and late stage of the 3rd sequence, the duration of the para-sequence is short and the sedimentation rate is high. On the contrary, the duration is long and the sedimentation rate is low in the middle stage.

Key words: ESR age, sequence stratigraphy, para-sequence, Jiyang depression

CLC Number: