新疆阿尔塔什地区上白垩统至上第三系成岩作用研究

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。

A STUDY ON THE DIAGENESIS OF THE UPPER CRETACEOUS TO MIOCENE SERIES IN ARTASHI,TARIM BASIN

The sedimentation-lithogenesis environments are clearly different between the Upper Cretaceous and the Miocene Series in the study region. By means of microscope. fluid inclusion, electron-probe and sedimentary environment analysis. it is concluded that the rock of Upper Cretaceous to Oligocene age is at stage A of late diagenesis and that of Oligocene to Miocene age is at stage B of early diagenesis. Combining the study of diagenetic types with the measured physical parameters of inclusions. the diagenetic generations are divided up:The late diagenetic stage (A) contains three authigenic mineral generations (marked by ⅡⅡand Ⅲ),and the early one (B) does two (Ⅰand Ⅱ). Meanwhile. deposit-diagenesis is controlled by tectonics-sedimentary environment and buried conditions.