Deep-Water Gravity Flow Depositional Elements and Depositional Systems in Passive Margin: Case Studies in Deep-water Areas of Niger Delta and Baiyun Sag, Pearl River Mouth Basin

详细信息   

• 责任者：Li Lei (School of Earth Sciences and Engineering ; Xi’ an Shiyou University ; Xi’an 710065 ; China) ; Wang Yingmin
• 刊名：Geological Review
• 出版年：2012
• 卷期：58(5)
• 关键词：重力流 ; gravity flows ; 沉积体系 ; depositional system ; 珠江口盆地 ; Zhujiangkou Basin ; 尼日尔 ; Niger
• 页码：p.846-853
• 图表：3 illus., 45 refs.
• 分类号：0200
• issnNo：ISSN0371-5736
• isbnNo：CN11-1952/P

摘要

Based on the study of Niger Delta basin and Baiyun sag, Pearl River Mouth basin, making use of high-resolution 3-D seismic data, the deepwater gravity flow depositional elements and deep-water depositional systems are discussed and three conclusions are made： 1） deep-water gravity flow depositional systems in different basins vary in general distribution, however they are all composed of basic depositional elements which are mass transport deposits, submarine channel, and lobe; 2） due to the differences in gravity flow supply, continental slope topography, equilibrium profile, accommodation, and deposition process, there are significant differences in the deep-water gravity flow depositional systems and their system stack styles in passive margin basins; and 3） when the deep-water gravity flow depositional elements are identified and characterized, the main controlling factors should be taken into account for the deepwater gravity flow depositional system. It is unrealistic to accurately summarize and predict the gravity flow depositional system with any single model.