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二叠系风城组为准噶尔盆地乌尔禾地区重要的勘探层系,也是成因非常特殊的深湖相含盐火山-沉积建造。通过14口钻井岩心观察,296片薄片鉴定,30块扫描电镜和28件X衍射等分析技术手段,较为详细地研究了风城组盐类矿物及伴生矿物的各项特征,识别出硅硼钠石、碳酸钠钙石、白云石等主要盐类矿物和硬石膏、石膏、玉髓、黄铁矿和蒙脱石等伴生矿物,确定风城组深湖相含盐火山-沉积建造与同期相间发生的火山喷发和湖底热液喷流活动有关,其成因可与酒西盆地下沟组湖相喷流岩和东非裂谷坦噶尼喀湖现代深湖底热液喷流沉积作用相类比,提出“深水湖盆热液喷流含盐火山-沉积建造模式”。
The Permian Fengcheng Formation is an important exploration strata in Wuerhe area, Junggar Basin, and also a deep-lacustrine salt-bearing volcano-sedimentary formation with very special origin. The characteristics of salt minerals and associated minerals in Fengcheng Formation were studied in detail through 14 core drilling observations, 296 thin slice identification, 30 scanning electron microscopy and 28 X-ray diffraction techniques. Rock, calcareousite, dolomite and other major salt minerals and anhydrite, gypsum, chalcedony, pyrite and montmorillonite and other associated minerals, determine the composition of the deep-lake facies volcanic valleys - sedimentary construction and phase The occurrence of volcanic eruptions is related to hydrothermal jets at the bottom of the lake, and their causes are similar to those of the Lower Pleistocene lacustrine jet from the West Liquefaction basin and the modern deep-lake hydrothermal jet deposition from the East African rift, Tanganyika Lake. “Shallow Lake Basin hydrothermal jet flow salt volcano - Sedimentary model ”.