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Metallogenic Pattern of Carbonaceous-Siliceous-Argillaceous Type Uranium Deposits in Xuefengshan-Miaoershan Area
Author(s): 
Pages: 208-214
Year: Issue:  4
Journal: Uranium Geology

Keyword:  Xuefengshan-Miaoershan areacarbonaceous-siliceous-argillaceous type uranium deposituranium metallogenic model;
Abstract: 雪峰山-苗儿山成矿带是碳硅泥岩型铀矿床产出集中区,已发现大量的铀矿床、矿点和异常点.笔者对已有的铀矿床进行系统对比分析,按主导成因将矿床划分为4种类型,分别是沉积-成岩型、沉积-外生改造型、沉积-热液-淋积型和沉积-热液叠加改造型.在此基础上,分析了区域成矿地质环境,划分了4个成矿演化阶段,并分别阐述了各阶段的铀成矿特征.通过分析区域成矿作用、沉积相、构造、断陷红盆、侵入岩体等与铀成矿的关系,总结出区域铀成矿的时空分布规律,建立了区域铀成矿模式.
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