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甘肃北山大红山—西涧泉地区水系沉积物地球化学特征及找矿远景
- 徐沛斌|范宗福|董国祥|张旭
- 作者单位：
- 甘肃省地质矿产勘查开发局第四地质矿产勘查院|甘肃省地质矿产勘查开发局第四地质矿产勘查院|甘肃省地质矿产勘查开发局第四地质矿产勘查院|甘肃省地质矿产勘查开发局第四地质矿产勘查院
基金项目：
- 甘肃省国土资源厅基础地质调查项目（甘国土资财发〔2015〕27号）
详细信息：
- 作者简介：
- 徐沛斌（1985—），男，甘肃武威人，工程师，硕士，从事区域地质调查与矿产勘查工作；甘肃省酒泉市肃州区解放路52号，甘肃省地质矿产勘查开发局第四地质矿产勘查院，735000；E-mail：289708329@qq.com
- 通讯作者：
- isnull
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Geochemical characteristics of stream sediments and prospecting prospects in Dahongshan-Xijianquan Area,Beishan,Gansu
- English Author：
- Fourth Institute of Geological and Mineral Exploration of Gansu Provincial Bureau of Geology and Mineral Resources|Fourth Institute of Geological and Mineral Exploration of Gansu Provincial Bureau of Geology and Mineral Resources|Fourth Institute of Geological and Mineral Exploration of Gansu Provincial Bureau of Geology and Mineral Resources|Fourth Institute of Geological and Mineral Exploration of Gansu Provincial Bureau of Geology and Mineral Resources
- Unit：
- 摘要
- 在线预览
- 参考文献
摘要:
在大红山—西涧泉地区开展1∶5万水系沉积物测量，采集样品10 567件，采样粒度-4目至＋20目。通过样品分析和数理统计，对成矿元素地球化学特征进行研究，共圈定744处单元素异常、4类组合异常、24处综合异常。根据异常查证评价结果对综合异常进行了分类和排序。在此基础上，结合地质背景、矿产分布特征，划分了4处以Au、Pb、Zn、W、Mo为主的找矿远景区，初步评价了其成矿潜力，指出了具有成矿潜力的矿床类型为蚀变岩型金矿床、陆相火山—次火山热液型铅锌多金属矿床、岩浆热液型钨钼矿床。
关键词:
水系沉积物；蚀变岩型金矿床；岩浆热液型钨钼矿床；找矿远景区；大红山—西涧泉 地区
Abstract:
1∶50 000 stream sediment survey was carried out in Dahongshan-Xijianquan Area,and 10 567 samples were collected with sample grain size varying from -4 meshes to ＋20 meshes.Through sample analysis and mathematical statistics,the geochemical characteristics of the ore-forming elements were studied,in total delineating 744 single element anomalies,4 combination anomalies and 24 comprehensive anomalies.The comprehensive anomalies are classified and ranked according to the anomaly inspection and evaluation results.Based on that,4 prospecting prospects dominated by Au,Pb,Zn,W and Mo were pided according to geological background and mineral distribution characteristics,and their ore-forming potentials were preliminarily evaluated,pointing out that the alterated rock type gold deposits,continental facies volcanic-subvolcanic thermal fluids type lead zinc polymetallic deposits and magmatic thermal fluids type tungsten molybdenum deposits are the deposit types that have ore-forming potentials.
Keywords:
stream sediment;alterated rock type gold deposit;magmatic thermal fluids type tungsten molybdenum deposit;prospecting prospect;Dahongshan-Xijianquan Area
