伊犁盆地南缘东段郎卡-达拉地铀成矿条件分析与远景评述  

Analysis on Uranium Metallogenic Conditions and Prospect of Langka-Daladi Area in the East of Southern Margin of Yili Basin

作　　者：宋继叶[1] 倪仕琪 蔡煜琦[1] 邱余波[2] 张晓[1] 乔宝平 张虎军[2] 张磊[2] 李真真 SONG Jiye;NI Shiqi;CAI Yuqi;QIU Yubo;ZHANG Xiao;QIAO Baoping;ZHANG Hujun;ZHANG Lei;LI Zhenzhen(CNNC Key Laboratory of Uranium Resources Exploration and Evaluation Technology,Beijing Research Institute of Uranium Geology,Beijing 100029,China;Geological Party No.216,CNNC,Urumqi,Xinjiang 830011,China)

机构地区：[1]核工业北京地质研究院中核集团铀资源勘查与评价技术重点实验室,北京100029 [2]核工业二一六大队,新疆乌鲁木齐830011

出　　处：《铀矿地质》2023年第1期29-45,共17页Uranium Geology

基　　金：中国核工业地质局地勘费项目“铀资源勘查开发动态分析与项目优选”(编号:202143-4)资助。

摘　　要：伊犁盆地是中国重要的铀矿基地,在盆地南缘中西段相继发现了一系列大、中型可地浸层间氧化带砂岩型铀矿床,但南缘东段(朗卡-达拉地一带)至今未有较大的突破,是否存在如蒙其古尔、洪海沟地区成矿规模的“第三个”铀成矿富集区的问题亟待解决。因此,文章以伊犁盆地南缘东段郎卡-达拉地地区的铀成矿条件分析与远景情况评述为主要研究内容,在总结分析前人研究成果的基础上,通过充分收集钻孔、物探资料和野外实地调查,以及室内分析和编图综合研究,系统分析研究区成矿构造、沉积及古水动力条件,进而论述研究区成矿潜力与远景,以期为实现该盆地的资源扩大提供勘查部署建议。研究结果表明:郎卡-乌尔坦倒转洼陷地区为现有重点勘查区及外围资源量扩大、拓展深部“第二找矿空间”的有利地段;库鲁斯台-达拉地复式向斜带及其以北地区成矿规模局限,但阿尔玛来和阿尔玛来-苏阿苏以北地区是值得进一步勘查的远景区。Yili Basin is an important uranium deposit base in China. Several large and mediumsize in-situ leachable interlayer oxidation zone sandstone type uranium deposits have been found in the middle and western part of the southern margin of Yili Basin. However, there is no significant breakthrough in the eastern part(Longka-Daladi area) of the southern margin of Yili Basin. In order to understand this question, this paper made analysis of uranium metallogenic conditions and review of the prospect. By summarizing and analyzing previous research results of drilling, geophysical exploration, field investigation as well as comprehensive mapping, the metallogenic structure, sedimentary and paleohydrodynamic conditions were systematically analyzed in the study area. Furthermore, the metallogenic potential and prospect of the study area were discussed. The results showed that Langka-Wuertan area is the favorable area for the key exploration and expand of the "second prospecting space". However, the metallogenic scale of Kulustai-Daladi compound syncline belt and its north area was limited compared with that of Mengqiguer and its east extension, but the metallogenic prospect of Aermalai syncline and the prospective area to the north of Aermalai-Suasu is worth to explore.

关 键 词：成矿构造 沉积条件 古水动力 远景评述与找矿方向 郎卡-达拉地 伊犁盆地南缘 

分 类 号：P619.14[天文地球—矿床学]