潮水盆地西部构造演化与铀成矿作用研究  

Structural Evolution and Uranium Metallogenetic Process in Western Chaoshui Basin

作　　者：伍群 王刚 牛霆 郭文 杨冰彬 曹雷 叶发旺[2] 童勤龙[2] 李新春[2] WU Qun;WANG Gang;NIU Ting;GUO Wen;YANG Bingbin;CAO Lei;YE Fawang;TONG Qinlong;LI Xinchun(Research Institute No.203,CNNC,Xi’an,Shaanxi 710086,China;National key laboratory of remote sensing information and image analysis technology,Beijing Research Institute of Uranium Geology,Beijing 100029,China)

机构地区：[1]核工业二〇三研究所,陕西西安710086 [2]核工业北京地质研究院遥感信息与图像分析技术国家级重点实验室,北京100029

出　　处：《铀矿地质》2022年第6期1070-1083,共14页Uranium Geology

基　　金：中国核工业地质局项目(编号:202221-3);核能开发项目“基于航空高光谱与伽玛能谱的铀矿勘查技术研究”(编号:[2021]88)联合资助。

摘　　要：潮水盆地为中国北方重要的古生代-中新生代叠合盆地,也是中国重要的产煤-油-铀盆地之一。盆地经历了中侏罗世伸展断陷,晚侏罗世挤压抬升阶段;早白垩世拉分断陷,晚白垩世全面抬升阶段;中新世全面沉降,上新世抬升剥蚀阶段。盆地西部铀成矿整体表现为同沉积预富集、叠加后生氧化改造的成矿特点。通过构造演化与铀成矿作用关系的研究,结合相关资料,分析认为大红山断陷主要找矿目的层为下白垩统庙沟组,断陷南缘强烈抬升区是泥岩型或砂岩型铀成矿的有利区域;跃进山凸起长期处于抬升淋滤状态,是层间氧化带砂岩型铀成矿的有利部位;南部凹陷带长期处于沉降断陷状态,主要形成泥岩型、膏结岩型铀矿化。Chaoshui Basin is an important Paleozoic-Mesozoic-Cenozoic superimposed basin in northern China,and it is one of the important coal-oil-uranium-producing basin.The basin experienced structural evolution of Middle Jurassic stage of extensional fault depression and Late Jurassic compression uplift;the Miocene stage of overall subsidence,Pliocene sage of uplift and denudation.The overall performance of the basin is the characteristics of synsedimentary pre-enrichment,superimposed epigenetic oxidation transformation to ore formation.By studying the relationship between structural evolution and uranium mineralization,combined with relevant data,it was concluded that the main prospecting target layer in Dahongshan fault depression was the Lower Cretaceous Miaogou formation,the strong uplift area of the southern margin in the fault depression was mudstone or sandstone favorable area for uranium mineralization;Yuejinshan bulge was a favorable location for sandstone-type uranium mineralization due to the long time uplift and leaching;and the southern sag was the mainly area for mudstone type and gypsum type uranium mineralization due to its state of a long time subsidence and fault depression.

关 键 词：构造演化 构造反转 铀成矿 潮水盆地 

分 类 号：P619.14[天文地球—矿床学]