| 地洼区铀成矿的时间分布规律 |
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| 引用本文： | 姚振凯,朱蓉斌.地洼区铀成矿的时间分布规律[J].大地构造与成矿学,1990,14(1):21-27. |
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| 作者姓名： | 姚振凯 朱蓉斌 |
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| 摘 要： | 根据国内外发现的地洼区及其与铀成矿时代的关系,分为早元古代、中元古代、晚元古代、早古生代、晚古生代,中生代和新生代等7个不同时代的地洼区。铀的成矿富集,发生在地洼阶段激烈期向余动期的过渡时间内。元古代地洼区地壳固结早,铀成矿年龄值大,地洼余动期时间长。中新生代地洼区地壳固结晚,铀成矿年龄值小,地洼余动期时间较短。
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| 关 键 词： | 地洼区 铀成矿作用 时间分布规律 |
TEMPORAL DISTRIBUTION OF URANIUM METALLOGENESIS IN DIWA REGIONS |
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| Abstract: | Diwa region (activated region, tectonomagmatic activated region) is one of the crustal fundamental geotectonic units, which controlled uranium metallogenesis obvious ly and crustal basic tectonic units, which controlled uranium metallogenesis obviously and owns many types of economic uranium deposits and abundant uranium ore resources. Therefore, diwa region is the most important tectonic unit for uranium metallogenesis.According to uranium metallogenic time, diwa region can be divided into: (1) Early Proterozoic Diwa region, (2) Middle Proterozoic diwa region, (3) Late Proterozoic diwa region, (4) Early Palaeozoic diwa region, (5) Late Palaeozoic diwa region, (6) Mesozoic diwa region anti (7) Cenozoic diwa region, Uranium deposits often related to intense crustal tectono-magmatic activity in the middle to late period of the diwa stage. In Proterozoic diwa regions the crust was solidified earlier, the age of uranium mineralization is older and the residual-inability period lasted longer. But in Masozoic and Cenozoic diwaregions, the crust was solidified later. the age of uranium mineralization is younger and the residual-mobility period lasted shorter. |
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| Keywords: | Diwa region uranium metallogenesis temporal distribution |
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