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| 松辽盆地南部白兴吐地区油气后生还原对铀成矿的作用 | |
| 引用本文： | 张振强,赵忠华,杨冰,杨福,李鹏飞. 松辽盆地南部白兴吐地区油气后生还原对铀成矿的作用[J]. 铀矿地质, 2009, 25(5): 290-295 |
| 作者姓名： | 张振强 赵忠华 杨冰 杨福 李鹏飞 |
| 作者单位： | 1. 核工业240研究所,辽宁,沈阳,110032 2. 核工业243大队,内蒙,赤峰,024006 3. 东北大学资源与土木工程学院,辽宁,沈阳,110004 |
| 摘 要： | 白兴吐地区姚家组铀矿化岩石中有机炭和有机硫都较低，而矿石中烃类含量比围岩高数至数十倍，油气对砂岩型铀矿成矿作用明显。油气及热液沿断裂上升，热事件有利于CH4在溶液中发生TSR反应，并加速铀的沉淀。断裂及油气是该区铀矿化的主要因素。 |
| 关 键 词： | 白兴吐地区 姚家组 砂岩型铀矿化 油气还原作用 |
Epigenetic-reduction of oil and gas to uranium mineralization in Yaojia formation in Baixingtu area of southern Songliao basin |
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| ZHANG Zhen-qiang,ZHAO Zhong-hua,YANG Bing,YANG Fu,LI Peng-fei. Epigenetic-reduction of oil and gas to uranium mineralization in Yaojia formation in Baixingtu area of southern Songliao basin[J]. Uranium Geology, 2009, 25(5): 290-295 | |
| Authors: | ZHANG Zhen-qiang ZHAO Zhong-hua YANG Bing YANG Fu LI Peng-fei |
| Affiliation: | ZHANG Zhen-qiang , ZHAO Zhong-hua, YANG Bing, YANG Fu , LI Peng-fei (1. Research Institute No. 240, CNNC, Shenyang, Liaoning 110032, China; 2. Geological Party No. 243, CNNC, Chi feng, Inner Mongolia 024006, China; 3. School of Civil and Engineering, Northeastern University, Shenyang, Liaoning 110004, China) |
| Abstract: | Uranium mineralization in Baixingtu area has typical features of epigenetic-reduction by oil and gas because the ore is with high content of hydrocarbon and rich inclusion, but the wall rocks are of low contents of organic carbon and organic sulfur. The role of oil and gas played in sandstone type uranium mineralization is summarized as folliwing model： oil-gas and hydrothermal solution go into sandstone bodies of Yaojia formation along deep faults, some CH4 in oil and gas reduces and precipitates uranium directly, some CH4 joins the TSR reaction in the solution and produces H2S. The H2S reduces and precipitates uranium, and forms uranmium mineralization. Therefore faults and oil-gas reduction are two major mineralization controlling factors in this area. |
| Keywords: | Baixingtu area Yaojia formation sandstone type uranium mineralization reduction of oil and gas |
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