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文章以产于不同地质背景及不同层位的五个碳硅泥岩型铀矿床为例,说明该类型铀矿床常分布于断陷带的倾伏地段。初步探讨了该类型铀矿床产于断陷带倾伏地段的原因:富铀地层是成矿的物质基础和前提,经干旱气候条件下地下水的淋积造矿作用成为工业富集,成矿期都在气候干旱的中、新生代;断陷带的倾伏地段比扬起段汇水条件好,易形成铀矿床;在新构造运动上升区,保矿条件是控矿诸因素中最关键的条件,倾伏地段最有利于保矿。文章指出了识别断陷带倾伏地段的标志,对该类型锚矿床找矿勘探有实际意义。
Taking the five carbonaceous mudstone-type uranium deposits of different geological backgrounds and different horizons as an example, the article shows that uranium deposits of this type are often found in the plunging areas of the fault zone. The reason for this type of uranium deposit originating in the subsidence zone of the fault depression zone is discussed preliminarily: the uranium enrichment formation is the material foundation and premise of mineralization, and the mineralization of groundwater under the arid climatic conditions becomes industrial enrichment. All of them are in the middle and new Cenozoic during the arid climate. The plunging area of the fault zone is better than that of the rising stage and easy to form the uranium deposit. In the area where the new tectonic movement is uplifted, the ore-holding conditions are the most crucial factors Conditions, the most favorable conditions for insured mine. The article points out the identification of the decollement with plunging sections, which has practical significance for the prospecting of this type of anchor deposit.