中国南海北部珠江口盆地西部海相地层钙质隔层特征、成因及分布（英文）

发布时间：2021-10-01 01:34

　　综合利用岩心、普通薄片、全岩和黏土矿物X射线衍射、碳氧同位素等资料,对珠江口盆地西部珠江组二段Ⅰ油组海相砂岩地层钙质隔层的岩性和矿物结构特征、成因模式及其分布规律进行系统研究。研究区钙质隔层岩性主要为含陆源碎屑生屑灰岩和少量细粒钙质石英砂岩。在此基础上建立了两种钙质隔层的成因模式:蒸发作用海水成因和浅埋藏淡水成因。蒸发作用海水成因的钙质隔层在前滨亚相发育,主要发育在1-1岩层组和1-3岩层组顶部。浅埋藏淡水成因的钙质隔层在后滨亚相发育,主要发育在1-2岩层组。 

【文章来源】：Journal of Central South University. 2020,27(11)EISCICSCD

【文章页数】：13 页

【文章目录】：
1 Introduction
2 Regional geological background
3 Methods and materials
4 Results and discussions
    4.1 Feature of calcareous insulating layers
        4.1.1 Lithology
        4.1.2 Rock structural characteristics
    4.2 Genetic models of calcareous insulating layers
        4.2.1 Carbon and oxygen isotope numerical analysis
        4.2.2 Genetic models of calcareous insulating layers
    4.3 Distribution of calcareous insulating layers
        4.3.1 Relationship between distribution of calcareous insulating layers and sedimentary subfacies
        4.3.2 Relationship between distribution of
5 Conclusions
Contributors
Conflict of interest


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