Carboniferous volcano-sedimentary basin of West Tianshan was an epicontinental one formed in Muyunkum-Kyzykum-Ili microplate,as well as being the evolution process of Ili Carboniferous-Permian rift zone, and experienced pull-apart to stabilization to pull-apart and volcanic activity being strenuous to quiet to strenuous and controlled Fe mineralization of volcanic , volcanic-sedimentary and chemical-sedimentary actions, which formed sea-faces volcanic-sedimentary Fe (Mn) deposits in West Tiansh. From the center of volcanic activity to far, mineralization type has a mark of volcanic erupt pile to volcanic-sedimentary to chemical sedimentary regularity.%西天山石炭纪火山-沉积盆地是在穆云库姆-克齐尔库姆-伊犁微板块上形成的陆缘盆地,在伊犁石炭一二叠纪裂谷带发展过程中,经历了拉张至稳定再拉张、火山活动剧烈→平静→强烈的地质构造及火山活动发展过程,控制了盆地内以铁为主的火山成矿作用、火山-沉积成矿作用及化学沉积成矿作用,形成了西天山海相火山-沉积型铁(锰)矿床,具有距火山活动中心由近到远,成矿类型由火山喷溢堆积型至火山沉积型再到化学沉积型的变化规律.
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