层序地层研究的新思路——构造—层序地层研究  

A NEW METHOD FOR SEQUENCE STRATIGRAPHY——STRUCTURE- SEQUENCE RESEARCH

作　　者：胡宗全[1] 

机构地区：[1]中国石油化工股份有限公司勘探开发研究院,北京100083

出　　处：《现代地质》2004年第4期549-554,共6页Geoscience

基　　金：中国石油化工股份有限公司科技发展部项目(P03076)。

摘　　要：构造—层序地层研究是层序地层研究的一种新思路,其理论基础是构造对层序的发育、沉积相的空间分布和保存状况都具有重要的控制作用。在同沉积期、沉积期前和沉积期后等不同时期,构造对层序发育的控制方式也不同:沉积期前构造对层序发育的控制主要表现为对盆底地形和前期剩余可容空间的控制;同沉积构造主要表现为对新增可容空间的控制;沉积期后构造主要表现为对沉积物保存状况的影响。在对时代较老的、经历多旋回构造改造的地层进行层序和沉积体系的研究时,应充分考虑构造对层序的发育和保存情况的影响。在构造、成盆演化分析基础上研究层序发育及沉积相演化规律,既能体现构造与层序演化之间的成因联系,又能体现构造与沉积相展布之间的空间配置,从而使层序地层研究与储层、烃源岩、圈闭等成藏条件评价能更紧密地结合,使层序地层研究能更好地指导油气勘探。Structure-sequence stratigraphy is a new method for sequence stratigraphy, which is based on the theory that structure is one of the main factors controlling sequence development, distribution and conservation of sedimentary facies. At different periods of presedimentary, synsedimentary and postsedimentary, the controlling patterns of structures on sequence development change: pre-sedimentary structures control the initial topography and residual accommodation of earlier period, synsedimentary structures control the new-gained accommodation, while post-sedimentary structures control the conservation of deposits. In research on sequence and sedimentary systems, especially on those strata of old age and undergoing multi-cycle tectonic transforms, influences of structures on sequence development and conservation should be considered adequately. Based on the analysis of tectonic and basin forming evolution, the study of sequence development and sedimentary facies evolution can not only embody inherent relation between structures and sequence evolution, but also the spatial collocation of structures with the distribution of strata and sedimentary facies. Structure-sequence research urges the tight combination of sequence research with the evaluation of reservoir, source rock and trap, and carries better application of sequence stratigraphy in hydrocarbon exploration.

关 键 词：构造-层序地层 可容空间 沉积期前构造 同沉积期构造 沉积期后构造 

分 类 号：P539.2[天文地球—古生物学与地层学]