砂脉的研究现状与进展*
Situation of study and development tendency of sandy dykes

近年来国内外对砂脉的研究非常重视,尤其是近期国外含油气盆地大型砂脉(砂注入体,sand injectite)的发现更加刺激了人们的研究热情。笔者主要从5个方面简要阐述了砂脉的研究现状与进展: (1)砂脉几何学特征;(2)砂脉的物质成分;(3)砂脉的成因;(4)砂脉的分类;(5)砂脉的地质意义。尽管中国不少学者已经做了一些相关工作,但与砂脉的复杂性和国际同类研究的先进水平和关注度相比,尚存在许多问题亟待解决。因此,有必要基于中国丰富且复杂的砂脉资源,精细解剖典型实例,阐明砂脉的三维几何特征,并探讨其与地震的关系和成因动力机制,为丰富和完善沉积学基础理论提供素材。
In recent years,sandy dykes have been attracted lots of attention and the research has intensified on sandstone intrusion processes and products because of their potential commercial significance. The paper focuses on five aspects about situation of study and development tendency of sandy dykes: geometry, component, genesis, classification and geological significance. Despite of some previous work,more problems are waiting to be solved in China,considering the complexity of sandy dykes and internationally research degree. Based on the abundant source of sandy dykes in China,we should analyze the typical cases and discuss the dynamic mechanism and relationship with seismicity,which offers basic materials to enrich and complete sedimentary theories