摘要
松辽盆地英台—大安地区西邻龙虎泡—大安阶地。姚家组下部沉积时期,英台大安地区西部紧邻东倾的斜坡,在地震剖面上与姚家组下部地层相当的2个反射同相轴向西超覆尖灭,反映了姚家组下部为2套向西逐层超覆的楔形体。测井、录井、岩心资料综合分析表明,下部楔形体主要为重力流沉积形成的湖底扇,上部楔形体在沉积上东、西存在差异,西侧为三角洲,东侧以湖底扇沉积为主。湖底扇主要为滑塌沉积和碎屑流沉积,少见浊流沉积。
The western area of Yingtai- Daan abuts on Longhupao- Daan terrace in Songlao Basin. During the depositional period of lower part of Yaojia Formation, the western area of Yingtai- Daan abuts on eastward- dip slope,in seismic profiles there are 2 onlap reflections which are equivalent with lower part of Yaojia Formation, which indicate that there are 2 overlap wedges in lower part of Yaojia Formation.Comprehensive analysis of log and core data indicate that the lower wedge dominated by lake floor fan, but there are clear different in depositional features from east to west to the upper wedge,delta developed in west, lake floor fan in east.The lake floor fan mainly consists of slump and debris sediments, and little turbidite.
出处
《大庆石油地质与开发》
CAS
CSCD
2004年第3期17-19,共3页
Petroleum Geology & Oilfield Development in Daqing
基金
大型坳陷湖盆坡折带的构造-古地貌-剥蚀沉积响应耦合(自然科学基金项目编号40272057)。
关键词
地层超覆
湖底扇
三角洲
姚家组
松辽盆地
strata onlap
lake floor fan
delta
Yaojia Formation
Songlao Basin
