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塔西南坳阿尔塔什地区上白垩统至始新统中段与始新统上段至上第三系中新统两段地层沉积-成岩作用具有明显的差异，根据镜下薄片鉴定、流体包裹体测试和电子探针分析等综合研究，结合沉积环境分析，结果表明上白垩统至始新统中段处于晚成岩阶段的A段，始新统上段至中新统处于早成岩阶段的B段。通过各阶段成岩作用类型的研究并根据一些实测参数，进行了成岩自生矿物期次划分，即早成岩阶段（B）有Ⅰ、Ⅱ两期成岩自生矿物，晚成岩阶段（A）有Ⅰ、Ⅱ、Ⅲ三期。不同沉积成岩作用受制于构造-沉积环境和埋藏条件的变化。
Sedimentary-diagenesis of the Upper Cretaceous to Early Eocene and upper Miocene of the Upper Member of the Upper Paleozoic in the Taxiaonan Au have obvious differences. According to the microscopic identification of thin slices, fluid inclusion testing and Electron probe analysis and other comprehensive studies, combined with sedimentary environment analysis, the results show that the Upper Cretaceous to the Eocene in the late diagenetic stage A section, the Upper Eocene to the Miocene in the early diagenetic stage B section. According to the diagenesis types in each stage and the analysis of some measured parameters, the diagenetic authigenic mineral is divided into two stages: (Ⅰ) and (Ⅱ) diagenetic authigenic minerals in the early diagenetic stage (B), Ⅰ and Ⅱ in the late diagenetic stage , Ⅲ three. Diagenesis of different sediments is subject to changes in tectonic-sedimentary environment and burial conditions.