国外扇三角洲研究新进展

在简略回顾扇三角洲的背景信息、研究历史和介绍了经典的一牙买加。阿拉斯加、吉尔伯特三大模式基础上，总结了国外对扇三角洲的一些新认识有：构造沉降，相对海平面升降和断层运动等因素对扇三角洲沉积的影响；提出由陆架进积至斜坡坡折的大型吉尔伯特型扇三角洲和堆叠于活动断层之上的吉尔伯特三角洲两种新沉积模式；前积层中砾质舌状体，特殊叠覆构造与大型槽状交错层理的研究；裂缝，胶结和碎屑流等具体沉积特征与机理的分析；对扇三角洲相带储层模型的建立等。最后提出未来扇区三角州的研究方向为：之前各项研究争议较大，难以定论的机理，且局限性较强，无法适用于实际情况的储层模型等。

Advances in Study of Fan Delta abroad

This paper deals with background information and study history of san delta as well as basic characteristics of such three classical models as Jamaica, Alaska and Gilbert models and advances in study of san delta abroad. These advances include influence of tectonic subsidence, eustacy and fault activity on fan delta sedimentation, establishment of such two new fan delta sedimentation models as in large Gilbert fan delta from shelf to slope and Gilbert fan delta superimposed on active fault, study of pebble tongue in foreset bed, special imbricate structure and large trough cross bedding, establishment of fan delta facies reservoir model and so on.