Base on observation of cores and analyzing data of grain size, the probability cumulative grain size curves in the main sedimentary environments of the Tertiary in west Qaidam Basin were summarized.

• 摘要在岩心观察的基础上，利用主要取心井的粒度分析资料，对柴达木盆地西部地区第三系碎屑岩主要沉积环境的粒度概率曲线进行了研究。