沉积与特提斯地质2025，Vol.45Issue(4)：751-764,14.DOI:10.19826/j.cnki.1009-3850.2025.11006
高精度航空磁、放探测在大兴安岭稀有稀土矿床成矿作用研究及找矿勘查中的应用
The application of high-precision airborne magnetic and gamma-ray spectrometry surveys in the study of mineralization and exploration of rare metals and REE deposits in the Great Xing'an Range
摘要
Abstract
The 801 deposit,located in the central-southern section of the Great Xing'an Range,is the largest alkaline granite-type rare and rare earth elements deposit(REE deposit)in China.At present,there have been many studies on geochronology,geochemistry,and rock mineralogy in the region.However,there is relatively little research on deep sources of ore-forming materials,the migration pathways of ore-forming materials,and the key structural factors controlling mineralization.Therefore,there has been no significant breakthrough in peripheral exploration and prospecting work for a long time.This article uses the latest 1∶25 000 high-precision aerogeophysical(magnetic,gamma-ray spectrometry)data to identify the Zhuji ridge deep fault and circular fault structures closely related to mineralization.The three-dimensional inversion results of aeromagnetic ΔT data show the spatial distribution of hidden granite intrusive rocks,revealing the coupling relationship between the special magmatic activity,the line-ring fault structure combination,and rare-earth ore mineralization in the area.It is believed that the deep-seated granite intrusion and the line-ring fault structure in the area control the distribution,formation,and enrichment of the 801 REE deposit.At the same time,the typical aerogeophysical prospecting indicators for REE deposits in 801 were summarized,and the spatial distribution of alkaline granite in the periphery of the 801 deposit was inferred.The favorable area for prospecting is centered on the deep granite intrusion,which is distributed in a"satellite"shape along the circular fault system at its top.Especially in the western circular fault zone,there is a high possibility of discovering alkaline granite-type REE deposits,which points out the direction for the next exploration and prospecting.This study has clear guiding value for the study of regional REE ore mineralization and exploration.关键词
大兴安岭/稀有稀土矿/线−环断裂体系/航空物探/找矿勘查Key words
Great Xing'an Range/rare metal and rare earth element deposit/line-ring fault structure/airborne geophysical prospecting/mineral exploration and prospecting分类
天文与地球科学引用本文复制引用
何敬梓,葛藤菲,牛兴国,张林杰,范振宇,周道卿,王刚,李亮..高精度航空磁、放探测在大兴安岭稀有稀土矿床成矿作用研究及找矿勘查中的应用[J].沉积与特提斯地质,2025,45(4):751-764,14.基金项目
内蒙古自治区地质勘查项目([2024]-JC28) （[2024]-JC28）
中央引导地方科技发展资金项目(2023ZY0036) （2023ZY0036）
