摘要
吉中敦密断裂带碱性岩富含稀有金属元素,本文在重新整合断裂带区域多幅1∶20万水系沉积物测量数据的基础上,重新处理数据,降低高背景区元素异常下限,提高低背景区异常下限,确定找矿远景区,明确找矿靶区,新发现了多个铌钽矿(化)点。新生代碱性火山侵入杂岩稀有金属元素成矿的专属性岩石,敦密断裂带为稀有金属元素成矿岩浆热液提供了储矿和导矿环境。
The alkaline rocks within the Dunmi Fault Zone in central Jilin Province are enriched with rare metal elements.Based on the re-integration of regional multi-map(1∶200000 scale)stream sediment survey data along the fault zone,the authors reprocessed the data by lowering the anomaly thresholds in high-background areas and raising them in low-background areas.This approach helped delineate prospecting target areas and identify prospective zones for exploration,leading to the discovery of several new niobium-tantalum mineralization occurrences.Cenozoic alkaline volcanic-intrusive complexes serve as the specific host rocks for rare metal mineralization,while the Dunmi Fault Zone provides both channel ways and structural traps for the ore-forming magmatic-hydrothermal fluids.
作者
陈馥
张海莹
孙锐
程双
CHEN Fu;ZHANG Haiying;SUN Rui;CHENG Shuang(Regional Geological and Mineral Resources Survey of Jilin Province,Changchun 130022,Jinlin,China)
出处
《吉林地质》
2025年第3期80-85,共6页
Jilin Geology
关键词
铌钽稀有金属
敦密断裂带
异常下限
异常背景
新生代碱性火山侵入杂岩
Niobium-tantalum rare metals
Dunmi Fault Zone
anomaly threshold
anomaly background
Cenozoic alkaline volcanic-intrusive complex
