一、地质概况硫磺山自然硫矿田位于祁连地槽褶皱系的祁连中间隆起带,即位于陶莱隆起与青海哈拉湖褶皱束接壤处,波罗沟—崩汤复向斜北侧(图1)。震旦亚代中期,本区接受了一套蓟县—青白口系陶莱南山群碳酸盐、石膏及碎屑岩类沉积。晚期,本区又沉积一套碎屑岩、碳酸盐岩、泥岩夹中—基性海相火山碎屑岩。 First, the geological overview Sulfur Hill natural sulfur ore field is located in the Qilian tectonic fold belt Qilian uplift belt, that is located in the Taulailian uplift and the Qinghai Hala Lake folds bordering the northern side of the Polo ditch - collapse Tang syncline (figure 1). During the mid-Sinian Asia, the area received a set of sediments of carbonate, gypsum and clastic rock in the Qiaxian-Qingbaikou-Taolan Nanshan Group. In the late stage, a series of clastic rocks, carbonate rocks and mudstone rocks were also deposited in this area to form medium-marine volcaniclastic rocks.