Characteristics of Multiple-Circular Slope Break Geomorphology and Its Controlling on Sedimentary Process in Changling Sag, Songliao Basin
详细信息
- 责任者：Hu Chunxin (Research Institute ; Northeast Oil and Gas Company ; SINOPEC ; Changchun 130062 ; China) ; Yang Shuai
- 刊名：Petroleum Geology & Experiment
- 出版年：2013
- 卷期：35(1)
- 关键词：沉积体系 ; depositional system ; 坡折带 ; slope-break belts ; 油气勘探 ; petroleum exploration ; 松辽平原 ; Songliao Plain
- 页码：p.17-23
- 图表：illus., 22 refs.
- 分类号：1003
- issnNo：ISSN1001-6112
- isbnNo：CN32-1151/TE
摘要
By means of high-resolution sequence stratigraphy,tectonic stratigraphy,fine sedimentary system analysis and tectonic-palaeogeomorphology recovery,the formation feature and process of the Changling Sag during depressive stage were studied systematically.It was concluded that during the depressive stage,the sag was both uplifted and depressive controlled by multiple circles of slope-break belts.The slope-break belts not only divided geographic units,but also controlled the changes of sedimentary facies,resulting in the close coupling relationship between palaeogeomorphology and sedimentary system distribution.Furthermore,4 favorable exploration regions in the study area were proposed,including the plain lithofacies of uplift belt,the proximal delta front of slope belt,the proximal delta front of deep depression,and the far delta front of deep depression.
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