新疆布尔津盆地西部凹陷砂岩型铀成矿条件及找矿方向  

Metallogenic Conditions and Prospecting Direction of Sandstone Type Uranium Deposit in Western Sag of Burjin Basin,Xinjiang

作　　者：杨彦波 陈虹[1] 王毛毛[1] 毛广振 蒲小晨 李承龙 Yang Yanbo;Chen Hong;Wang Maomao;Mao Guangzhen;Pu Xiaochen;Li Chenglong(Geologic Party No.216,CNNC,Urumqi,Xinjiang,830000,China)

机构地区：[1]核工业二一六大队,新疆乌鲁木齐830000

出　　处：《新疆地质》2022年第2期250-255,共6页Xinjiang Geology

基　　金：中国核工业地质局新疆准噶尔盆地及周边地区铀矿资源调查评价与勘查项目(201906);新疆准噶尔盆地北部吉木乃-布尔津地区铀矿资源调查评价项目(201906-4)联合资助。

摘　　要：通过对布尔津盆地西部凹陷铀源、构造、古气候、水文地质、目的层岩性岩相、还原介质、后生蚀变及铀矿化特征进行分析,认为西部凹陷南部铀源条件丰富,目的层乌伦古河组发育多层砂体,泥-砂-泥结构稳定,构造掀斜作用形成有利的单斜带,地下水补径排体系完整,发育多层层间氧化带,总体具较好的铀成矿条件。西部凹陷南部铀成矿主要受构造演化、目的层结构、铀源、古气候及后生蚀变等因素控制。目前揭露的铀矿化线索,证实该区具有成矿潜力及找矿空间。By analyzing the characteristics of uranium source,structure,paleoclimate,hydrogeology,lithology and lithofacies of target layer,reduction medium,epigenetic alteration and uranium mineralization in the Western Sag of bur-jin basin.The analysis shows that there are rich uranium source conditions in the south of the western sag,multi-layer sand bodies are developed in the wulunguhe formation of the target layer,the mud sand mud structure is stable,the struc-tural tilting forms a favorable monoclinal zone,the groundwater recharge and discharge system is complete,and multi layer interlayer oxidation zone is developed,which has good uranium metallogenic conditions on the whole.The urani-um mineralization in the south of the western sag is mainly controlled by structural evolution,target layer structure,ura-nium source,paleoclimate and epigenetic alteration.The above factors are superimposed parts under favorable condi-tions,and the prospecting prospect is great;The uranium mineralization clues revealed at present also confirm that the ar-ea has certain metallogenic potential and prospecting space.

关 键 词：西部凹陷 层间氧化带 砂岩型铀矿 成矿条件分析 

分 类 号：P619.14[天文地球—矿床学]