基于地球物理场的华阳川铀矿区深部构造特征及其深部找矿潜力  

Deep Structural Characteristics and Prospecting Potential of Huayangchuan Uranium Deposit Based on Geophysical Field

作　　者：郭培虹 耿涛 冯治汉 唐小平 齐琦 GUO Peihong;GENG Tao;FENG Zhihan;TANG Xiaoping;QI Qi(Xi’an Center of China Geological Survey/Geosciences Innovation Center of Northwest China,Xi’an 710119,Shaanxi,China)

机构地区：[1]中国地质调查局西安地质调查中心/西北地质科技创新中心,陕西西安710119

出　　处：《西北地质》2024年第4期182-190,共9页Northwestern Geology

基　　金：国家重点研发计划“典型覆盖区航空地球物理技术示范与处理解释软件平台开发”所属课题“北秦岭华阳川地区隐伏铀矿空-地-井协同勘查技术示范研究”(2017YFC0602205);中国地质调查局项目“全国镍钴矿战略性矿产调查”(DD20240128);“阿勒泰地区富蕴县喀拉通克外围综合物探”(DD20243563);陕西省自然科学基础研究计划项目“甘肃北山马鬃山地区基性岩墙群构造意义研究”(2022JQ-272)联合资助。

摘　　要：华阳川铀多金属矿的勘查工作近年来取得了较大进展,基本查明了浅部矿体的分布情况。然而,由于北秦岭华阳川地区深部构造发育,地形复杂,前期缺乏对深部构造特征的研究,制约了该区深部找矿突破。笔者通过航空重、磁及地面电磁剖面工作,结合已有的地质资料,对华阳川铀多金属矿区的深部构造特征进行了全面分析。研究结果显示,华阳川韧性剪切带的深部延伸为铀源的迁移和迁出提供了重要的通道。同时,华山岩体具有铀源迁出特征,其在华阳川矿区北界面变缓,呈现出“靠椅”状的形态,这种地质结构有利于铀源的富集和就位。基于以上,认为华阳川铀矿区深部至少1500 m内仍具有寻找铀矿的巨大潜力。In recent years,significant progress has been achieved in the exploration of Huayangchuan uranium polymetallic ore,and the distribution of shallow ore bodies has been mainly identified.However,the deep tectonic development and complex terrain of the Huayangchuan area in the North Qinling Mountains,as well as a lack of early research on the characteristics of the deep tectonics,have restricted the deep prospecting break-through in this area.Based on available geological data,a comprehensive analysis has been conducted on the deep structural characteristics of the Huayangchuan uranium polymetallic mining area.The study reveals that the deep extension of the Huayangchuan ductile shear zone provides crucial pathways for the migration and em-placement of uranium sources.Furthermore,the contact of the Huashan rock body on the northern side of the mining area exhibits a gentle gradient,forming a"chair-like"morphology,which favors the enrichment of urani-um sources.Based on these findings,it is believed that there is significant potential for uranium ore exploration within at least 1,500 meters of depth in the Huayangchuan uranium mining area.

关 键 词：华阳川铀多金属矿 地球物理场 深部构造 找矿潜力 

分 类 号：P631[天文地球—地质矿产勘探]