摘要
笔者对鄂尔多斯盆地湖盆中部地区延长组长6物源分析、沉积相类型、坡折带控砂、砂体分布规律等进行了研究。东北、西南两大物源提供了充足的物质基础,发育三角洲牵引流作用的沉积砂岩和重力搬运的浊积砂岩,主要为叠置水下分流河道、河口砂坝-水下分流河道和滑塌浊积岩等不同类型的砂体组合,形成了垂直湖岸线和平行湖岸线展布的巨型厚砂岩分布带。
The authors studied the material source, characteristics of sedimentary facies, sand control in the slopebreak zone and distribution of Chang 6 sand bodies of the Yanchang Formation of the central Ordos lake basin. The source of sand bodies comes from the northeast and southwest. There are sandstone deposited by deltaic traction current action and turbidite sandstone deposited by gravitational transport. The sedimentary facies include superposed submerged distributary channels, mouth bars, distal bars and turbidite. The direction of distribution of the thick sand bodies is vertical or parallel to the lakeshore line.
出处
《中国地质》
CAS
CSCD
2008年第3期482-488,共7页
Geology in China
基金
中国石油天然气股份公司科技项目(060106)资助
关键词
鄂尔多斯
湖盆中部
砂体成因
浊积岩
Ordos
central part of the lake basin
origin of sand body
turbidite
