Oil & Gas Geology ›› 2008, Vol. 29 ›› Issue (3): 290-296,289.doi: 10.11743/ogg20080302

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Evolutionary characteristics of the Palaeogene basin-controlling boundary faults and types of basin architectures in the Dongying Sag

Sheng Wenbo1,2, Cao Yingchang3, Liu Hui3, Zhang Yu2   

  1. 1. Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, Guangdong 510640, China;
    2. Research Institute of Geological Sciences, Shengli Oilfield Company, SINOPEC, Dongying, Shandong 257015, China;
    3. Faculty of Earth Resources and Information, China University of Petroleum, Dongying, Shangdong 257061, China
  • Received:2007-11-17 Online:2008-06-24 Published:2012-01-16

Abstract:

The shape of the Palaeogene basin-controlling faults of Dongying sag had evolved from planar in the early period(basically corresponding to the deposition of the Kongdian Formation),to listric in the middle period(deposition of the fourth member to the Lower third member of Shahejie Formation),and finally to slope-flat in the late period(deposition of the second member of Shahejie Formation to Dongying Formation).The intensity of basin-controlling fault activity in Dongying sag shows a left-lateral feature.The spatial distribution of deposits is basically consistent with the strike of main faults in different evolutionary stages of the Palaeogene rifted basin.The fault activities controlled the sedimentary process.Corresponding with the evolution of boundary faults,the Palaeogene basin in Dongying sag had gone through the early rotation half-graben,middle rolling half-graben,and late compound half-graben.

Key words: basin architecture, structural evolution, basin-controlling fault, Palaeogene, Dongying Sag

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