论层序地层学对地震地层学领域的发展

ADVANCE IN SEISMIC STRATIGRAPHY——SEQUENCE STRATIGRAPHY

将层序地层学与经典的地震地层学的主要内容进行了对比。阐明了层序地层学与地震地层学之间本质性的区别.研究认为,层序地层学是在传统的地震地层学基础上.进一步总结归纳而概括出来的一整套沉积环境分布和岩相发育的时空模式。层序地层学是地震地层学发展的最新阶段.其主要进展包括:(1)地层单元的几何形态和岩性的四个主控变量深化了沉积相的成因分析;(2)建立了海平面升降的沉积旋回模式;(3)沉积体系域是以全盆地为目标的系统研究;(4)具有直接预测生储盖条件的功能.

This paper presents sequence stratigraphy in contrast with classical seismic stratigraphy and their essential difference. A set of time-spatial models are established by sequence stratigraphy for depositional environment and lithofacies development on the basis of seismic stratigraphy. Sequence stratigraphy, as the development of seismic stratigraphy, consists of four aspects: (1) Four controlling parameters of geometry and lithology of stratigraphic units are used to analyse the genesis of sedimentary facies: (2) Sedimentary cycle models are established from eustatic sea level: (3)The study of systems tract puts a target area into a systematic background of whole basin: (4)Sequence stratigrphy can be used to predict directly the development of source rock, reservoir and cap rock in a basin.