伊犁盆地阔斯加尔地区西山窑组上段有机碳、硫与铀成矿的关系  

Characteristics of Organic Carbon and Sulfur and Its Relationship to Uranium Deposit of Upper Xishanyao Formation in Kuosijiaer Area of Yili Basin

作　　者：陈虹[1] 邱余波[1] 李旭 王守玉 刘富强 张磊[1] Chen Hong;Qiu Yubo;Li Xu;Wang Shouyu;Liu Fuqiang;Zhang Lei(Geologic Party No.216,CNNC,Urumqi,Xinjiang,830011,China)

机构地区：[1]核工业二一六大队,新疆乌鲁木齐830011

出　　处：《新疆地质》2020年第1期92-96,共5页Xinjiang Geology

基　　金：新疆伊犁盆地砂岩型铀矿资源调查评价与勘查(201905)资助。

摘　　要：为研究阔斯加尔地区有机碳和硫与铀成矿关系,以西山窑组上段为研究层位,通过对不同分带中的样品分析结果得出铀在氧化带迁移、在过渡带富集的成矿机制,有机碳、硫化物等还原质与铀呈正相关性,通过绘制有机碳及硫化物平面分布与铀矿体关系图,阐述了层间氧化带在强还原质富集地带尖灭的特性,分析讨论了"还原物质富集带"在铀成矿过程中控制矿体产出空间的作用,揭示了"‘还原物质富集带’控制铀矿体的空间产出位置和形态"这一成矿规律。Uranium mineralization is controlled by interlayer oxidized zones in Kuosijiaer area,and there exist prominent zoning in the content of uranium,organic carbon and sulfide.This paper studied the uranium deposit of Upper Xishanyao formation to reveal the relationship between content of organic carbon,sulfur and uranium deposit in Kuosijiaer area.Statistics of analytical results of samples in different redox zoning,concluded that uranium transport in oxidized zones and precipitated in redox front,and uranium contents positively correlated with reducing substances,such as organic carbon,sulfide.Plane graph of relationship between uranium deposits and content of organic carbon,sulfide,indicated that interlayer oxidized zone pinch out in the zone where concentrating reducing substances.Reducing barrier played an important role to uranium deposit,which controlled the feature and ore body of uranium deposits.

关 键 词：伊犁盆地 阔斯加尔 砂岩型铀矿 还原障 

分 类 号：P534.52[天文地球—古生物学与地层学] P619.14[天文地球—地质学]