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新疆柯坪库木如吾祖克地区二叠纪火山岩产于柯坪微地块中 ,为陆相火山岩 ,主要由基性熔岩 (辉石玄武岩 )和酸性凝灰岩组成 ,具双峰式火山岩系组合特征。火山岩为 3个火山喷发旋回的产物 ,从下至上基性熔岩主元素成分成规律性变化 ,表明基性熔岩为同源岩浆分异演化的产物。基性熔岩具有大陆火山岩性质 ,形成于大陆拉张环境。该二叠纪火山岩为天山造山带石炭—二叠纪大规模裂谷作用在柯坪古老微地块上的反映
The Cretaceous volcanic rocks in Kemu, Kuping, Xinjiang, such as the Ouzuk region, are produced in the Keping micro-massif. They are continental volcanic rocks and are mainly composed of basic lava (pyroxene basalt) and acidic tuff with bimodal volcanic series feature. The volcanic rocks are the product of three volcanic eruptions and the main elemental composition of the basic lava changes regularly from bottom to top, indicating that the basic lavas are the products of the differentiation and evolution of the same magma. Basic lava has the characteristics of the mainland volcanic rocks, formed in the mainland stretching environment. The Permian Volcanic Rock Reflects the Permo-Carboniferous-Permian Rift in the Tianshan Orogenic Belt on the Keping Ancient Microflora