现代地质Issue(1)：200-208,9.
珠江口盆地白云凹陷中新世水道发育的主控因素
Controlling Factors on the Miocene Channel in Baiyun Sag, Pearl River Mouth Basin
摘要
Abstract
During 21 -18.5 Ma,13.8 -12.5 Ma and 10.5 -8.5 Ma of Miocene,the channels developed in Baiyun Sag.In these three stages,the shape and architecture of the channels were different.During 21 -18.5 Ma,the architecture of the channel was simple,the channel extended a long distance and the sediment was de-posited in the distal end.In 13.8 -12.5 Ma,the channel migrated northward.During the early of 13.8 -12.5 Ma,the channel only developed in the south,then developed upstream.The channel in 10.5 -8.5 Ma became deeper and narrower,and had the convergent feature.These changes of these channels’migration and shape feature were due to different controlling factors in these stages.In 21 -18.5 Ma,the channel was related to the abundant sediment supply from the shelf margin delta.In 13.8 -12.5 Ma,the channel was affected by the sig-nificant sea-level decline in 13.8 Ma.In 10.5 -8.5 Ma,Dongsha Movement led to the Baiyun Sag uplift and the paleo-topography determined the channel development.The analysis of the controlling factors in different stages provided new information to the research of the channel shape and evolution in each stage.关键词
白云凹陷/控制因素/沉积物供给/海平面变化/东沙运动/古地貌Key words
Baiyun Sag/controlling factor/the sediment supply/the sea-level change/Dongsha Movement/paleo-topography分类
能源科技引用本文复制引用
乔博,张昌民,李少华,杜家元,张忠涛..珠江口盆地白云凹陷中新世水道发育的主控因素[J].现代地质,2016,(1):200-208,9.基金项目
国家“十二五”科技重大专项（2011ZX05023－002）。 （）
