地质论评2012，Vol.58Issue(5)：846-853,8.
被动陆缘深水重力流沉积单元及沉积体系——以尼日尔三角洲和珠江口盆地白云凹陷深水区为例
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
摘要
Abstract
Deep-water sedimentary basins of passive margins are a hot field in petroleum exploration and sedimentology research. 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. (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.关键词
被动陆缘/深水/重力流/沉积单元/沉积体系/尼日尔三角洲/珠江口盆地白云凹陷Key words
passive margin/ deep water/ gravity flow/ depositional element/ depositional system/Niger delta/Baiyun sag, Pearl River Mouth basin引用本文复制引用
李磊,王英民,徐强,黄志超..被动陆缘深水重力流沉积单元及沉积体系——以尼日尔三角洲和珠江口盆地白云凹陷深水区为例[J].地质论评,2012,58(5):846-853,8.基金项目
本文为国家973计划(编号2009CB219407)和国家自然科学基金(编号40572067)的成果. （编号2009CB219407）
