盐湖盆地斜坡带碎屑岩成岩作用特征初探──以柴达木盆地阿尔金斜坡第三系碎屑岩地层为例

在柴达木盆地阿尔金斜坡第三系地层中，砂岩中碳酸盐重结晶强烈、压实程度弱、石英自生加大较弱、早期碳酸盐胶结物发育。碳酸盐主要为无机成因，少量与生物气有关，其含量受盐度的影响。泥岩中粘土矿物以伊利石、绿泥石和伊蒙混层为主，缺少蒙脱石和高岭石，随埋深增加，伊利石相对含量变化无规律可循，绿泥石相对含量减少，推测伊利石主要为陆源成因。

Study on Diagenesis in the Slope of the Saline Lake Basin:An Example From the Tertiary of the Aerjin Slope in Caidam Basin

The Tertiary in the Aerjin Slope in Caidam Basin is characterized by strong carbonate recrystallization, weak compaction, weak quartz overgrowth and enrichment of the early-stage carbonate. The carbonate cement, influenced by the salinity to some degree,is mainly inorganic with few relation to biogas. In muds clay assemblage is illite-illite/montmorillonite-chlorite. With the increase of depth the relative content of illite fluctuates and that of chlorite decreases. The illite may be terrestrial origin.