西南石油大学学报(自然科学版) ›› 2009, Vol. 31 ›› Issue (2): 45-48.DOI: 10.3863/j.issn.1674-5086.2009.02.011

• 地质勘探 • Previous Articles     Next Articles

APPLICATION OF FORMATION THICKNESS COEFFICIENT TO STUDY TECTONIC EVOLUTION OF CHAGAN SAG

XU Hui-yong1a,1b JIANG You-lu1a ZHANG Li-qiang1a WANG Jin-you1a OUYANG Rui2   

  1. 1.China University of Petroleum：a.College of Geo-resources and Information，b.Journal of Agency，Dongying Shandong 257061，China；2.Research Institute of Exploration and Development，Zhongyuan Oilfield Company，SINOPEC，Puyang Henan 457001 ，China
  • Received:1900-01-01 Revised:1900-01-01 Online:2009-04-20 Published:2009-04-20

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Abstract: Based on the rule of sedimentary compensation，the formation thickness coefficient is applied to study tectonic movement.The artical gives the procedure and the range of application.This new method is used to study tectonic movement of Chagan Sag in Lower Cretaceous.The result shows that in this area，a tectonic movement which is named "seesaw" developed.The critical time of this tectonic movement was between the first period of Suhongtu Formation （K1s1） and the second period（K1s2）.Based on the conclusion above，characteristics of structural evolution is studied and four stages are involved，faulting stage，rifting and depressing trasmitting stage，depressing stage and reversing stage.This conclusion can provide suggestions for studying structural evolution and future exploration.

Key words: Chagan Sag, formation thickness coefficient, structural evolution, rift basin, seesaw movement

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