| 相山铀矿田流纹英安斑岩的厘定及与铀矿化的关系 |
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| 引用本文： | 吴仁贵,余达淦,张树明.相山铀矿田流纹英安斑岩的厘定及与铀矿化的关系[J].铀矿地质,2003,19(2):81-87. |
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| 作者姓名： | 吴仁贵 余达淦 张树明 |
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| 作者单位： | 东华理工学院,江西,抚州,344000 |
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| 摘 要： | 本从地质产状、岩石学和同位素年龄等特征出发，对相山铀矿田的两套英安岩进行了厘定，指出流纹英安岩为溢出相岩石，而流纹英安斑岩为浅成侵入相岩石，两系不同时期形成的产物。在时间序列上，流纹英安斑岩形成于淬斑熔岩和花岗斑岩之后，与火山隐爆或气爆作用有关，是相山矿田铀矿化的有利主岩之一。
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| 关 键 词： | 流纹英安岩 流纹英安斑岩 同位素年龄 铀矿床 岩石学 化学组成 气爆作用 空间分布 |
| 文章编号： | 1000-0658(2003)02-0081-07 |
| 修稿时间： | 2002年5月28日 |
Identification of rhyolite-dacite porphyry and its relation to uranium mineralization at Xiangshan uranium ore-field |
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| WU Ren?gui,YU Da?gan,ZHANG Shu?ming.Identification of rhyolite-dacite porphyry and its relation to uranium mineralization at Xiangshan uranium ore-field[J].Uranium Geology,2003,19(2):81-87. |
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| Authors: | WU Ren?gui YU Da?gan ZHANG Shu?ming |
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| Abstract: | Based on the geologic occurrence,petrologic and isotopic age characteristics,authors of this article have identified 2 suites of dacite at Xiangshan uranium ore?field,and recognized that rhyolite?dacite is of volcanic effusion phase,but rhyolite?dacite porphyry belongs to hypabyssal intrusive phase.In the formation sequence,the rhyolite?dacite porphyry being one of the favorable host rocks for uranium mineralization,was formed after that of porphyroclastic lava and granite?porphyry,and closely associated with volcanic cryptoexplosion or exhausting?explosion. |
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| Keywords: | Xiangshan uranium ore?field rhyolite?dacite rhyolite?dacite porphyry isotopic age |
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