Study on Depositional Shoreline Break for Terrigenous Sequence in the Steep Slope Zone of Fault-depressed Lacustrine Basin
Hu Shou-quan & Guo Wen-ping Yang Feng-gen Yan Qi-bin Liu Shu-gen & Tong Chong-guang
Hu Shou-quan & Guo Wen-ping (Department of Earth Sciences , Zhongshan University , Guangzhou , 510275)
Yang Feng-gen (Department of Earth Sciences , Nanjing University , Nanjing , 210093)
Yan Qi-bin (Petroleum Institute of Southwest , Nanchong , China , 637001)
Liu Shu-gen & Tong Chong-guang (Technology University of Chengdu , Chengdu , 610059)
Based on analyses of the sedimentation-responsed charateristics to the accommodation variation law at different structural positions of the steep slope zone in fault-depressed lacustrine basin, accommodation mechanics to select reference well has been discussed; and the principle for selecting reference well has been put forward. According to the facies migration character and systems tract superimposed style in reference well, the standards for identifying two types of terrigenous sequence (type Ⅰand Ⅱ) and the models of their systems tract in a terrigenous sequence have been established under the background of reference well. In this paper, the upper member of Eh3 in Shuanghe～Zhao'ao area, Biyang fault-depression, is treated as a case to study terrigenous sequence stratigraphy by using well B207 as reference well. This result shows that it can effectively resolved the problem about depositional shoreline break for terrigenous sequence in the steep slope zone of fault-depressed lacustrine basin by using reference well.
. Study on Depositional Shoreline Break for Terrigenous Sequence in the Steep Slope Zone of Fault-depressed Lacustrine Basin[J]. JOPC, 2000, 2(4): 20-29.
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