Tectonic Transformation of Changling Fault Depression in the Southern Songliao Basin and Its Significance of Hydrocarbon Accumulation

详细信息   

• 责任者：Chen Juan (Department of Earth Sciences ; Nanjing University ; Nanjing 210093 ; China) ; Zhang Qinglong
• 刊名：Acta Geologica Sinica
• 出版年：2008
• 卷期：82(8)
• 关键词：构造演化 ; structural evolution ; 油气藏形成 ; reservoir formation ; 松辽平原 ; Songliao Plain
• 页码：p.1027-1035
• 图表：5 illus., 2 tables, 25 refs.
• 分类号：1003
• issnNo：ISSN0001-5717
• isbnNo：CN11-1951/P

摘要

Three typical near EW-trending cross-sections of Changling fault depression in the Songliao Basin were studied using the theory of balanced cross-sections. The analysis indicates that rifting of the basin started in Huoshiling period and subsided intensively in Shahezi and Yingcheng periods, with extension rates of 907.50, 1 373.90, and 1 100.00 m/Ma, respectively, peaking at the Yingcheng period. Therefore, large-scale low-magnitude folding structure formed by tectonic activities at the end of Shahezi and Yingcheng periods is a favorable zone for accumulation of oil and natural gas.