琼东南盆地半地堑充填模型  

THE HALF GRABEN FILL MODEL OF QIONG DONG NAN BASIN

作　　者：吴培康[1] 

机构地区：[1]海洋石油勘探开发研究中心

出　　处：《中国海上油气（地质）》1992年第6期1-7,共7页China Offshore Oil and Gas(Geology)

摘　　要：半地堑是裂谷盆地充填的基本构成单元。琼东南盆地下第三系的岩相展布受控于半地堑及其组合。断陷充填过程中的物源方向和途径取决于半地堑及其组合中的构造缓坡通道。区内具有崖13－1半地堑末梢型，松27－2复合型和崖15－1叠合型三种主要物源通道。构造缓块不仅是控制半地堑内沉积体系布和配置的物源通道，而且自身能形成圈闭。应用半地堑模型分析断陷盆地充填历史是盆地分析的一条有效途径。Detailed analyzed the lower Tertiary Structure and rock facies in Qiongdongnan Basin reveals that a half graben is the fundamental unit of basin fill and the distribution of rock facies was controlled by half graben and its complex.The direction and paths of debris resource in the process of faulted basin fill are de- pendent on the structural gentle slopes passageway of the half graben and its complex. It can be devided into 3 types of passageway of debris resource,i.e.Ya 15-1,Ya13-1 and Song 27-2. Such structural gentle slopes moreover may formed closures. It is an effective short-cut of basin analysis that applying the half graben model to analyze the history of faulted-basin fill.

关 键 词：琼东南盆地 半地堑 充填模型 断陷充填 沉积体系 物源通道 油气地质 

分 类 号：P618.130.2[天文地球—矿床学] TE12[天文地球—地质学]