新疆萨瓦布其地区含铀煤成因分析  

Analysis on genesis of uranium-bearing coal in Sawabuqi area,Xinjiang

作　　者：刘章月[1] 董文明[1] 刘红旭[1] 

机构地区：[1]核工业北京地质研究院,北京100029

出　　处：《铀矿地质》2011年第6期345-351,共7页Uranium Geology

基　　金：塔里木盆地北缘段预研项目(编号:YY-DZ0701)

摘　　要：萨瓦布其地区煤岩型铀矿化产于中-下侏罗统克拉苏群煤层中,该套含煤地层形成于温湿条件下的山前辫状河和辫状河三角洲沉积环境中,在成岩以后的后生阶段遭受了3次构造运动的影响,其中喜山期构造运动对煤岩型铀矿化最为有利。该区含铀煤变质程度较低,在后期构造运动中发生高角度倾斜甚至倒转,煤岩型铀矿化主要受后期的潜水氧化带、煤层产状以及断裂控制,具明显的后生富集成因特征。Coal-type uranium mineralization in Sawabuqi area occurred in the coal bed of Middle-Lower Jurassic Kelasuke Group.This coal-bearing strata was the sediment products of piedmont braided river and braided delta in warm and humid paleoclimate.After diagenesis,the Group had suffered three tectonic movement,the most favorable tectonic period to uranium mineralization is Himalayan.During this period,the coal bed was tilted with large angle and even overturned but metamorphosed slightly.The coal-type uranium mineralization was controlled by late phreatic oxidation zone,the occurrence of coal bed and faults show obvious characteristics of epigenic enrichment.

关 键 词：煤岩型铀矿化 构造活化 煤炭变质程度 后生富集 

分 类 号：P619.14[天文地球—矿床学]