摘要
高邮凹陷阜三段为典型的三角洲沉积,但是由于其沉积时期属于苏北盆地构造演化的断—坳阶段,控制砂体发育的因素十分复杂,主要包括:物源与古地貌、构造断裂活动、水动力特征以及三角洲前缘斜坡。这些因素互相影响,共同控制着凹陷内砂体的发育与分布。北部的远物源、宽缓的盆地形态及湖浪改造导致了横向展布的大型细粒三角洲的形成,造成砂体连通差、厚度薄。东部边界的吴堡断层产生的断槽则在凹陷东北部形成了延续性的多期叠加河道砂体,并在南方与三角洲前缘斜坡共同控制产生了许庄地区的滑塌浊积砂体。北斜坡上的三、四级断层对砂体没有影响。
The third member of Funing Formation of Gaoyou Depression is a typical delta, and it is in the fault - depressed stage of Subei Basin during its ancient topography, tectonic fault activi deposition. The mechanisms of controlling sand bodies are provenance and ty, the hydrodynamic characteristics and the delta front slope. These factors affects each other and controlls the development and distribution of sand bodies. The far provenance from the north, relief basin morphology and lake wave transformation leads to the formation of the lateral distribution of fine - grained delta. And they cause the features of poor connectivity and thin - layer of sand bodies. The superposition of the channel sand bodies in the northeast of the depression is formed in the broken slot of the Wubao Fault. And the fault produces the slump turbidite sand body in Xuzhuang region with the delta front slope. But the three - four fault has no effect on the deposition in the north slope of the depression.
出处
《重庆科技学院学报（自然科学版）》
CAS
2014年第3期56-61,共6页
Journal of Chongqing University of Science and Technology：Natural Sciences Edition
关键词
高邮凹陷
阜三段
断层控砂
三角洲
Gaoyou Depression
the third member of Funing Formation
fault controlling sand bodies
delta
