同济大学学报（自然科学版）2011，Vol.39Issue(3)：440-444,5.DOI:10.3969/j.issn.0253-374x.2011.03.024
下扬子五峰组上升流相烃源岩沉积特征
Sedimentary Characters of Wufeng Formation Upwelling Facies Source Rock in Lower Yangtze Area
摘要
Abstract
The layered radiolarian cherty deposition of the latest ordovician Wufeng Formation is one of the regional excellent hydrocarbon source rocks in the lower Yangtze region and caused by the upwelling in the slope environment of the foreland flexural-break stagnation-flow basin margin.Under the control of the intensity and surging recurrence frequency of the upwelling, the Wufeng Formation is dominated by many siliceous rock/ siliceous shale couplets with different siliceous organisms and periodic variation in thickness. As the deposition under the anoxic environment,the Wufeng Formation mainly has high hydrocarbon potentional amorphous organic matters originated from algae and other pelagic organisms. In the impact from the upwelling, the different protection mechanisms of organic matter happen during the sedimentation of siliceous rock and siliceous shale, while organic carbon mainly relates to the adsorption protection of clay mineral and the loss of organic matter during the siliconoxide mineral transformation.关键词
五峰组/烃源岩/上升流/沉积特征Key words
Wufeng Formation/ source rock/ upwelling/ sedimentary character分类
海洋科学引用本文复制引用
刘峰,蔡进功,吕炳全,刘军峰..下扬子五峰组上升流相烃源岩沉积特征[J].同济大学学报（自然科学版）,2011,39(3):440-444,5.基金项目
中国自然科学基金项目(40872089) （40872089）
