现代地质Issue(1)：80-88,9.
西非Rio Muni盆地深水水道特征与成因
Characteristics and Origin of Deep-water Channels in Rio Muni Basin,West Africa
摘要
Abstract
Study on the sedimentary architecture and evolution of deep-water channel is one of the most interest-ing fields in sedimentology.Based on high-resolution three-dimensional seismic data sets which cover 470 km2 , the sedimentary architecture and evolution of submarine channels are discussed in deep-water Rio Muni basin. Four conclusions can be drawn in this paper:(1 )The sinuosity of submarine channels are main dominated by the sediment supply and the seafloor gradient.Two main types of submarine channels:straight channels and sin-uous channels have been recognized in the study area.(2 )The high sinuosity submarine channel indents the shelf margin and is linked to areas of high coarse-grained sediment supply.Their mophologies often show asym-metrical cross-sections,terraces,slumped edges,lateral migration and abandoned channel.(3 )The submarine channels heading on middle or upper continental slopes have a low sinuosity.Straight channels’ morphologies commonly include a U-shaped cross-section,smooth walls lacking slumps or terraces,aggradational evolution. The straight channels with low sediment supply were draped by hemipelagic deposition.(4)The sinuosity of a submarine increases as the shelf gradient decreases.关键词
弯曲水道/顺直水道/沉积构型/Rio Muni盆地Key words
sinuous channel/straight channel/sedimentary architecture/Rio Muni basin分类
能源科技引用本文复制引用
李磊,闫瑞,李宁涛,杨蕾,张锦飞,刘阳,牛旭业,孙宇锋..西非Rio Muni盆地深水水道特征与成因[J].现代地质,2015,(1):80-88,9.基金项目
国家自然科学基金项目（41302147，41372118）；全国大学生创新创业计划项目（201210705013）；西安石油大学2013年大学生科研训练计划项目。 （）
