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Geological Features and Metallogenic Age of Unconventional Uranium Resources of Black-rock Series in Northwestern Hunan
Author(s): WANG Jian, QI Fucheng, LI Zhixing, WANG Wenquan, ZHANG Wendong, WANG Zhenyun
Pages: 28-
33
Year: 2020
Issue:
1
Journal: Uranium Geology
Keyword: 非常规铀资源; 湘西北; 黑色岩系; 成矿时代;
Abstract: 湘西北黑色岩系非常规铀资源主要包括:铀多金属磷块岩型、含铀磷块岩型、含铀黑色岩层型,其中铀多金属磷块岩型叠加含铀黑色岩层型的矿化组合,主要发育在扬子陆块东南缘的慈利断陷盆地中;3种类型共同叠加的矿化组合,主要发育在扬子陆块东南缘的晓平坳陷中.通过对湘西北地区黑色岩系非常规铀资源成矿时代的研究,获得两组成矿年龄分别为(718±87)Ma和(503±29)Ma,结合矿化地层发育特征,认为两组年龄中形成较早的含铀磷块岩型非常规铀资源是晚期铀多金属磷块岩型的成矿预富集阶段.
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