| 松辽盆地钱家店铀矿床层间氧化带结构定量表征及制约因素 |
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| 引用本文： | 曹民强,荣辉,陈振岩,焦养泉,里宏亮,王岩,李青春.松辽盆地钱家店铀矿床层间氧化带结构定量表征及制约因素[J].地球科学,2021,46(10):3453-3466. |
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| 作者姓名： | 曹民强 荣辉 陈振岩 焦养泉 里宏亮 王岩 李青春 |
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| 作者单位： | 1.辽河石油勘探局新能源开发公司, 辽宁盘锦 124010 |
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| 基金项目： | 国家重点研发计划项目2018YFC0604200国家重点研发计划项目2018YFC0604202国家重点研发计划项目2018YFC0604205国家青年科学基金项目41502105中国地质大学(武汉)学科杰出人才基金项目102-162301192664 |
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| 摘 要： | 层间氧化带精细结构的量化表征对揭示砂岩型铀成矿规律至关重要.利用系列沉积学和地球化学编图对松辽盆地钱家店铀矿床层间氧化带结构进行了量化表征，发现该矿床层间氧化带主要由红色砂岩、浅黄色砂岩、灰白色砂岩、灰色含矿砂岩和原生灰色砂岩构成，分别对应于强氧化亚带、弱氧化亚带、微弱氧化亚带、过渡带和还原带.铀矿化与层间氧化带内部结构关系密切:工业铀矿体主要发育在过渡带，微弱氧化亚带矿体连续性相对较差，弱氧化亚带发育零星铀矿化，还原带靠近过渡带一侧发育低品位的零星铀矿化.铀储层内部结构和沉积相对层间氧化带发育具有重要制约作用:辫状河砂体及辫状分流河道砂体是氧化带发育区域；辫状分流河道边部及分流间湾中决口扇砂体是过渡带发育区域.
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| 关 键 词： | 层间氧化带 砂岩型铀矿 钱家店铀矿床 松辽盆地 铀储层 沉积学 |
| 收稿时间： | 2020-06-22 |
Quantitative Characterization and Controlling Factors of the Interlayer Oxidation Zone of Qianjiadian Uranium Deposit,Songliao Basin |
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| Cao Minqiang,Rong Hui,Chen Zhenyan,Jiao Yangquan,Li Hongliang,Wang Yan,Li Qingchun.Quantitative Characterization and Controlling Factors of the Interlayer Oxidation Zone of Qianjiadian Uranium Deposit,Songliao Basin[J].Earth Science-Journal of China University of Geosciences,2021,46(10):3453-3466. |
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| Authors: | Cao Minqiang Rong Hui Chen Zhenyan Jiao Yangquan Li Hongliang Wang Yan Li Qingchun |
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| Abstract: | Quantitative characterization of architecture of the interlayer oxidation zone is very important to reveal the regularity of uranium mineralization. In this study, the interlayer oxidation zone of the Qianjiadian uranium deposits in the Songliao basin was quantitatively characterized by sedimentological and geochemistry mappings. It is found that the interlayer oxidation zone of the deposit is mainly composed of red sandstone, light yellow sandstone, gray white sandstone, gray mineralized sandstone and primary gray sandstone, respectively corresponding to strong oxidised subzone, weak oxidised subzone, faint oxidised subzone, transitional zone and reduction zone. The uranium mineralization is closely related to the internal architecture of interlayer oxidation zone. The main industrial uranium ore bodies are strictly developed in the transitional zone. A few ore bodies whose continuity is poor occur in the faint oxidised subzone. The ore bodies are sporadically distributed in the weak oxidation subzone. The low-grade uranium ore bodies are found in the side of reduction zone close to transitional zone. Formation of the interlayer oxidation zone is restricted by the heterogeneity of uranium reservoir sandstones and depositional systems. The oxidised zone is mainly developed in sand bodies of the braided river and braided distributary channel, and the transition zone primarily distributed at the edge of the braided distributary channel or in the crevasse fan. |
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