CAJ | 학술논문

通过岩心观察描述、薄片鉴定、X射线衍射分析、激光共聚焦显微镜分析等技术，以直观反映岩相间差异为原则，综合矿物成分、层理构造、有机质丰度、颜色以及其他混入物等因素，对东营凹陷沙三-沙四段半深湖-深湖细粒沉积岩进行岩相类型划分。结果表明：东营凹陷半深湖-深湖细粒沉积岩发育9种岩相类型，根据有机质含量对其中较发育的6种类型进一步细分为11个亚类；相对发育的富有机质纹层状灰岩、中有机质纹层状混合细粒岩、富有机质页状黏土岩、富有机质页状灰岩以及贫有机质块状混合细粒岩等5种岩相类型在宏观及微观特征、测井响应特征及发育环境等方面具有差异性；各岩相的平面分布特征反映了半深湖-深湖内部沉积环境的差异。
통과암심관찰묘술、박편감정、X사선연사분석、격광공취초현미경분석등기술，이직관반영암상간차이위원칙，종합광물성분、층리구조、유궤질봉도、안색이급기타혼입물등인소，대동영요함사삼-사사단반심호-심호세립침적암진행암상류형화분。결과표명：동영요함반심호-심호세립침적암발육9충암상류형，근거유궤질함량대기중교발육적6충류형진일보세분위11개아류；상대발육적부유궤질문층상회암、중유궤질문층상혼합세립암、부유궤질혈상점토암、부유궤질혈상회암이급빈유궤질괴상혼합세립암등5충암상류형재굉관급미관특정、측정향응특정급발육배경등방면구유차이성；각암상적평면분포특정반영료반심호-심호내부침적배경적차이。
Combining detailed description of core, thin sections identification, analysis of whole rock X-ray diffraction and scanning electron microscopy technologies, this study sets up a lithofacies classification scheme that is suitable for the fine-grained sedimentary rock in the 3rd and 4th members of Shahejie Formation in the west part of Dongying area. The analyses are based on the direct reflection of lithofacies differences and integrating various factors such as mineral composition, sedi-mentary structure, organic matter abundance, color and other foreign matters. The results show that there are nine types of lithofacies, and six major types, which can be further divided into 11 sub-types according to their organic content. This study mainly focuses on the five types of facies which are relatively developed, such as organic-rich laminated limestone, organic-rich calcareous interbedded limestone, organic-contained fine-grained mixed sedimentary rocks, organic-lean massive clay stone and organic-rich laminated clay stone. The differences in macroscopic characteristics, microscopic characteristics, log responses and sedimentary microfacies are analyzed. The lateral distribution of lithofacies is shown to reflect the differences in semi-deep and deep lacustrine.