世界核地质科学2024，Vol.41Issue(4)：650-664,15.DOI:10.3969/j.issn.1672-0636.2024.04.002
车排子凸起构造演化对铀成矿的控制作用
Structural evolution and its control on uranium mineralization in Chepaizi uplift,western Junggar basin,Xinjiang
摘要
Abstract
Chepaizi uplift is the key exploration area in western Junggar basin and some breakthrough has been made in the exploration of uranium deposits in this area,with the discovery of several economic and mineralized boreholes in recent year.By summarizing the regional geological setting and structural evolution of Chepaizi uplift,observing core samples and compiling comprehensive maps,we discussed the affect process of structural evolution on the transformation of target layer,the control of ancient water system on uranium-bearing ore-forming fluid in target layer and fracture structure control on the secondary reduction mechanism of oil and gas,and came to the following conclusions:1)the multiple uplifting of the northern Tianshan Mountains in Himalayan tectonic period,resulted in the depression and sedimentation in Chepaizi area,forming a favorable sedimentary facies belt of the Shawan formation;2)in the late Himalayan tectonic period,the northern Zaire mountain front was tilted and uplifted,forming a south-dipping monoclinic zone and some structural window for uranium-containing oxygenated water;3)the development of fault structure and unconformity in the evolution of Chepaizi bulge provided the channel for the continuously migration of deep oil and gas reservoirs,resulting in the secondary reduction of the ancient oxidation zone of Shawan formation,and the enrichment and mineralization of uranium in the interface of grey and green sand bodies.关键词
沙湾组/油气/构造演化/铀成矿/车排子凸起Key words
Shawan formation/oil and gas/structural evolution/uranium mineralization/Chepaizi uplift分类
天文与地球科学引用本文复制引用
何松,毛广振,陈虹,唐湘飞,王毛毛..车排子凸起构造演化对铀成矿的控制作用[J].世界核地质科学,2024,41(4):650-664,15.基金项目
中国核工业地质局项目"新疆准噶尔盆地铀矿资源调查评价与勘查"(202206)和中核集团集中研发项目"砂岩型铀矿多重耦合地质成矿作用与时空定位"(编号:中核科发2021-143号)联合资助 Supported by China Nuclear Industry Geological Bureau project'Xinjiang Junggar Basin Uranium Resources Investigation and Evaluation and Exploration(No.202206)and CNNC Research and Development Project(No.2021-143) （202206）
