世界砂岩型铀矿探明资源的分布及特征

发布时间：2018-05-29 02:09

本文选题：砂岩型铀矿 + 容矿层　；参考：《地质学报》2017年09期

【摘要】：最新核电发展规划显示未来我国对铀资源的需求很大。长久来看在继续加大国内勘探力度的同时,需尽快了解国外已探明铀资源尤其是砂岩型铀资源的分布,以更好地从全球视角完善我国的铀资源供应链。我国北方砂岩型铀矿大规模勘探始于本世纪初,起点较晚,在实际勘探和研究中也遇到较多难题及困惑。因此与全球同类型矿床的对比研究亟需展开,亦要求首先了解世界各国砂岩型铀矿的分布和基本特征。本文通过大量文献和最新勘探形势的调研整理,对比分析了近年来全球主要产铀国砂岩型铀矿资源量的变化,系统全面地编制了全新的全球和各国(或各大洲)已发现砂岩型铀矿床及其容矿层位分布图,总体可较精细地反映迄今全球各国已探明砂岩型铀矿分布面貌的现状,同时提炼了重点矿床的主要地质特征。最后总结出全球已发现砂岩型铀矿时空分布具有五大特征:(1)全球分布广泛但不均衡,跨欧亚存在东西向巨型铀矿带;(2)规模因地而异、(超)大型矿床较多;(3)平面分布与气候环境耦合明显;(4)容矿层时代跨度长、成矿时间相对较晚;(5)主要赋存于含油气或聚煤能源盆地中。本文提供了一份可以快速了解和全面把握全球砂岩型铀资源分布及其重要地质特征的材料,为科研人员提供可对比研究的国外矿床实例,同时也为我国企业"走出去"和"走向哪里"提供科学依据。
[Abstract]:The latest nuclear power development plan shows that there is a great demand for uranium resources in China in the future. In the long run, it is necessary to understand the distribution of proven uranium resources abroad, especially sandstone-type uranium resources, in order to improve the supply chain of uranium resources in China from a global perspective. The large-scale exploration of sandstone-type uranium deposits in northern China began at the beginning of this century, and the starting point was relatively late. Therefore, the comparative study with the same type of ore deposits in the world needs to be carried out, and it is also necessary to understand the distribution and basic characteristics of sandstone-type uranium deposits all over the world. Based on a large number of documents and survey of the latest exploration situation, this paper compares and analyzes the changes of sandstone-type uranium resources in the major uranium producing countries in the world in recent years. A completely new global and national (or continental) sandstone type uranium deposit and its ore-bearing horizon distribution maps have been compiled systematically and comprehensively, which can reflect in general the present situation of sandstone-type uranium deposits which have been proved to date in various countries of the world, At the same time, the main geological characteristics of the key deposits are refined. Finally, it is concluded that the space-time distribution of sandstone-type uranium deposits in the world has five major characteristics: (1) the global distribution is widespread but uneven. There is an east-west giant uranium ore belt in Trans-Eurasia. The scale of the zon2) varies from place to place. The plane distribution and climate environment are obviously coupled with the climatic environment. The age span of the ore-bearing strata is long. The ore-forming time is relatively late. This paper provides a material that can quickly understand and comprehensively understand the distribution and important geological characteristics of sandstone-type uranium resources in the world. At the same time, it also provides scientific basis for Chinese enterprises to go out and where to go.
【作者单位】：西北大学大陆动力学国家重点实验室西北大学含油气盆地研究所;中国海洋石油南海东部石油管理局研究院;
【基金】：国家自然科学基金(41330315) 中国地质调查局项目(12120114009201)联合资助的成果
【分类号】：P619.14

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