CAJ | 학술논문

沉积体的层次结构是复杂地质体的内在特征.针对现有碎屑沉积体层次结构分级中的不足,按照构型规模及包含关系,以最大自旋回与最小异旋回为衔接点,采用倒序分级原则,将已有的岩性体构型与层序构型分级整合为一体化的沉积体构型分级方案,并与我国的沉积相分级体系进行了比较分析.在沉积盆地内划分了12级构型单元,其中1~6级单元为层序构型,7~9级单元为相构型,10~12级单元为层理构型.这一方案有利于勘探开发一体化的地下地质研究.油气田勘探阶段构型分布的研究级别主要为1~4级,油气田开发阶段构型分布研究的级别主要为5~9级.我国现有的沉积相分级体系为自成因沉积体的分级体系,但并非层次结构分级体系,且存在相单元级次不统一的问题.微相单元一般具有层次结构意义,可作为构型单元,而亚相一般不能作为构型单元.
침적체적층차결구시복잡지질체적내재특정.침대현유쇄설침적체층차결구분급중적불족,안조구형규모급포함관계,이최대자선회여최소이선회위함접점,채용도서분급원칙,장이유적암성체구형여층서구형분급정합위일체화적침적체구형분급방안,병여아국적침적상분급체계진행료비교분석.재침적분지내화분료12급구형단원,기중1~6급단원위층서구형,7~9급단원위상구형,10~12급단원위층리구형.저일방안유리우감탐개발일체화적지하지질연구.유기전감탐계단구형분포적연구급별주요위1~4급,유기전개발계단구형분포연구적급별주요위5~9급.아국현유적침적상분급체계위자성인침적체적분급체계,단병비층차결구분급체계,차존재상단원급차불통일적문제.미상단원일반구유층차결구의의,가작위구형단원,이아상일반불능작위구형단원.
The hierarchical structure of clastic deposits is an intrinsic feature of a complex geologic body. As such, the clastic deposits are studied in a hierarchical style and divided into different architectural units. A comprehensive architectural unit hierarchical scheme in inverse order for clastic deposits is proposed through integration of the existing lithosome architecture hierarchy scheme and the sequential architecture hierarchy scheme based on the join point of maximum autocyclicity and minimum allocyclicity according to architectural scale and its relation. This scheme is compared with the present sedimentary facies classification system in China. In the proposed scheme, a continental basin is divided into twelve architectural units according to their different orders. Among them, the first to sixth units correspond to sequential architectures, the seventh to ninth units are facies architectures, and tenth to twelfth units are in an order of bedding architecture. The proposed division scheme will remove the hinder coursed by variety division schemes that exist in exploration and development research area. It will benefit to promote an integration of subsurface geological study. In the proposed scheme, the architecture units in exploration stage belong to first to fourth order, while the architecture units are grouped as fifth to ninth order in the development stage. The present sedimentary facies hierarchical system used in China is not an architectural hierarchy system. Thus, the facies hierarchy is not uniformed among variety sedimentary environment. The microfacies in present facies hierarchical system have significance hierarchical meaning and could be used as an architecture unit, but the subfacies has no meaning of architecture units.