新疆乌尔沟地区水系沉积物地球化学分区及其地质意义  

Geochemical Subdivision of Stream Sediments in the Wuergou Area of Xinjiang and Its Geological Significance

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)

机构地区：[1]宁夏回族自治区地球物理地球化学调查院,宁夏银川750004

出　　处：《宁夏大学学报（自然科学版）》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)。

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.

关 键 词：水系沉积物 地球化学分区 地质意义 乌尔沟地区 

分 类 号：P591[天文地球—地球化学]