摘要
十屋断陷沉积特征表现为近物源、粗碎屑快速沉积 ,冲积扇、扇三角洲、湖底扇与深水湖组合构成了特有的“扇 -湖”沉积面貌 ,正常三角洲缺乏。断陷沉积发展经历了早期充填、中期扩张、晚期萎缩 3个阶段 :早期充填阶段发育有冲积扇、辫状河及成煤沼泽 ;中期扩张阶段沉积特征为深水湖泊与湖底扇、扇三角洲组合 ;晚期萎缩阶段为浅湖与三角洲、湖岸洪泛平原组合。良好的沉积盆地类型决定了丰富的生油气物质基础 ,众多的沉积体系构成了多样化的复合圈闭 。
The deposition of Shiwu fault basin is characterized by the fan-deltas faces which are composed of alluvial fans, fan deltas and lake bottom fans deposited quickly with coarse and proximal provenance detritus, lack of normal delta. The development of Shiwu fault basin experienced three stages of fill, expansion, and shrinking. The first stage developed alluvial fans, braided streams and coal forming swamps. The second one produced the sedimentary assemblage of deep lakes, lakebed fans and fan-deltas. The final one generated the assemblage of shallow lakes, deltas and flooded shore plains. A plentiful of source rocks determined by the excellent basin type together with various compound traps came from the diversiform sedimentary systems gave the result of the better hydrocarbon prospecting of Shiwu fault basin.
出处
《吉林大学学报（地球科学版）》
EI
CAS
CSCD
北大核心
2002年第4期345-348,共4页
Journal of Jilin University：Earth Science Edition
基金
国家"九五"天然气攻关项目 (96 110 0 5 )
