摘要
基于新疆乌尔沟地区1∶5万水系沉积物资料,通过R型因子分析方法将研究区分为4个地球化学分区.结果表明,Ⅰ区是理想的Fe-Cu-Mn多金属找矿远景区,多期次的断裂为本区Fe,Mn的矿化提供了成矿通道;酸性岩脉为锰矿的形成提供了成矿热液,石炭系小热泉子组(C_(1)x)是Mn的天然矿源层.Ⅱ区中由动力变质变形作用形成的糜棱岩化变质砂岩与Fe的矿化关系最密切.Ⅲ区具有Fe-Cu-Au-Mn多金属矿的成矿前景.Ⅲ区发育韧性剪切带,在分区北西方向分布的系列辉长辉绿岩脉与Cu,Fe矿化点的分布一致,Ⅲ区的基性岩脉发育区是Cu-Fe矿的赋存区.Ⅳ区构造不发育,变质作用也不发育,也未发现可利用、有价值的矿点,找矿前景不好.
Based on the 150,000 stream sediment data in the Wuergou area of Xinjiang,the study area was divided into four geochemical divisions by R-type factor analysis method.The results show that ZoneⅠis an ideal prospective area for Fe-Cu-Mn polymetallic prospecting,and the multi-stage fractures provide mineralization channels for Fe and Mn mineralization in this area;while the acidic veins provide mineralization hydrothermal fluid for Mn ore formation,and the Carboniferous Little Hot Spring Subgroup(C_(1)x)is a natural source layer for Mn.The ductile shear zone is developed in ZoneⅢ,and the series of gabbro veins distributed in the north-west direction of the zone are consistent with the distribution of Cu and Fe mineralization,and the basal vein development area in ZoneⅢis the deposit area of Cu-Fe ore.The structure in ZoneⅣis tectonically undeveloped,nor is the metamorphism,and no valuable ore sites are found,so the prospecting prospect is not good.
作者
曹园园
倪萍
石天池
杨建锋
王超
虎新军
陈晓晶
马贵林
Cao Yuanyuan;Ni Ping;Shi Tianchi;Yang Jianfeng;Wang Chao;Hu Xinjun;Chen Xiaojing;Ma Guilin(Ningxia Hui Autonomous Region Geophysical Geochemical Exploration Institute,Yinchuan 750004,China)
出处
《宁夏大学学报(自然科学版)》
CAS
2022年第4期400-406,共7页
Journal of Ningxia University(Natural Science Edition)
基金
宁夏自然科学基金资助项目(2020AAC03450,2021AAC03454)
新疆维吾尔自治区地质勘查基金资助项目(T15-1-LQ33)。
关键词
水系沉积物
地球化学分区
地质意义
乌尔沟地区
stream sediments
geochemical subdivision
geological significance
Wuergou area