| 松辽盆地钱家店砂岩型铀矿床油气运移与铀成矿的关系:来自流体包裹体的证据 |
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| 引用本文： | 崔启杰,王可勇,李建国,马雪俐,赵华雷,杨贺,孙丽雪.松辽盆地钱家店砂岩型铀矿床油气运移与铀成矿的关系:来自流体包裹体的证据[J].世界地质,2022(1):92-107,116. |
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| 作者姓名： | 崔启杰 王可勇 李建国 马雪俐 赵华雷 杨贺 孙丽雪 |
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| 作者单位： | 吉林大学地球科学学院;中国地质调查局天津地质调查中心 |
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| 基金项目： | 中国地质调查局天津地质调查中心项目(12120115013501,2018YFC0604203-6)。 |
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| 摘 要： | 为探究油气运移与铀成矿的关系,笔者以松辽盆地钱家店砂岩型铀矿床为研究对象,系统开展了含矿砂岩薄片鉴定、电子探针研究以及流体包裹体岩相学和显微测温研究.结果表明:①研究区强矿化段砂岩硅质胶结物含量较多,为隐晶质玉髓胶结物;成岩演化序列为,泥晶方解石、自生黏土膜,石英加大边、石英加大边外围黏土膜、颗粒间压实的隐晶质玉髓胶结...
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| 关 键 词： | 松辽盆地 钱家店砂岩型铀矿床 油气运移 流体包裹体 |
Relationship between hydrocarbon migration and uranium mineralization in Qianjiadian sandstone-type uranium deposit,Songliao Basin:evidence from fluid inclusions |
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| CUI Qijie,WANG Keyong,LI Jianguo,MA Xueli,ZHAO Hualei,YANG He,SUN Lixue.Relationship between hydrocarbon migration and uranium mineralization in Qianjiadian sandstone-type uranium deposit,Songliao Basin:evidence from fluid inclusions[J].World Geology,2022(1):92-107,116. |
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| Authors: | CUI Qijie WANG Keyong LI Jianguo MA Xueli ZHAO Hualei YANG He SUN Lixue |
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| Institution: | (College of Earth Sciences,Jilin University,Changchun 130061,China;Tianjin Center of China Geological Survey,Tianjin 300170,China) |
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| Abstract: | In order to explore the relationship between oil and gas migration and uranium mineralization,the authors systematically carried out thin section identification,electron probe investigation,fluid inclusions petrography and microscopic temperature measurement of ore-bearing sandstone in the Qianjiadian sandstone-type uranium deposit in the Songliao Basin.The results show that:①There are more siliceous cements in the strongly mineralized sandstone in the study area,which are cryptocrystalline chalcedony cements;diagenetic evolution sequence includes micritic calcite,authigenic clay film,quartz overgrowth,clay film around quartz overgrowth,intergranular compaction of cryptocrystalline chalcedony cements,dolomite,veined calcite,and ankerite with limonite mineralization.②Uranium minerals in the ore-bearing sandstone are mostly dispersed in the ore-bearing sandstone cements,and a small amount of them are deposited in the pores of the clastic particles,among which some uranium minerals are found in the siliceous cements.③The organic inclusions are mainly composed of gas-liquid two phases,which occur in quartz overgrowth,particle crack,particle dissolution hole and cement.The gas-liquid inclusions in the siliceous cements are elliptic,irregular and randomly distributed.The homogenization temperature of the organic inclusions ranges from 60℃to 130℃,the freezing point temperature of the gas-liquid two-phase inclusions ranges from-1℃to-3.8℃,the corresponding fluid salinityω(NaCleqv)]ranges from 1.7%to 6.1%,and the homogenization temperature ranges from 97.8℃to 169.5℃.By analyzing the generation relationship between organic inclusions and gas-liquid inclusions and the time relationship between oil and gas migration and uranium mineralization,it is concluded that the primary migration of oil and gas is earlier than uranium mineralization,and there are multi-stage migration.The results of temperature measurement of gas-liquid inclusions indicate that the ore-forming fluid is a hydrothermal fluid with low salinity and low temperature,higher than the temperature of paleo-earth and surface water.Oil and gas migration and uranium mineralization are not during the same period,and oil and gas do not directly participate in uranium mineralization. |
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| Keywords: | Songliao Basin Qianjiadian sandstone type uranium deposit hydrocarbon migration fluid inclusions |
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