青海格尔木小红山北部地区地球化学特征及找矿前景分析

小红山北部地区位于东昆仑成矿带中部，主体属雪山峰-布尔汉布达华力西-印支期钴、金、铜、玉石（稀有、稀土）成矿带，成矿地质条件优越.水系沉积物及土壤地球化学测量发现金异常强度较高.金矿（化）体主要产于奥陶-志留纪纳赤台群，有碳酸盐岩组合、变碎屑岩组合及中酸性火山岩，研究区内水系沉积物Hs65、Hs93异常三级分带明显，异常强度高.通过1：1万土壤测量，土壤异常Au、Cu、As、Sb等元素异常强度较高，异常曲线基本重合，经地表槽探工程验证发现并控制金矿体1条，矿化体6条.通过对小红山北部地区成矿地质条件及地球化学综合分析，对比大灶火金矿点，认为小红山北部地区通过进一步勘查工作有望找到金矿床，具有较大的找矿潜力.

GEOCHEMICAL CHARACTERISTICS AND ORE PROSPECTING IN NORTHERN XIAOHONGSHAN,GOLMUD, QINGHAI PROVINCE

The northern part of Xiaohongshan, located in the middle of Eastern Kunlun metallogenic belt, mainly belongs to the Xueshanfeng-Buerhanbuda Variscan-Indosinian Co-Au-Cu and jade metallogenic belt, with favorable ore-forming geological conditions. Both stream sediments and soil geochemical survey show high intensity of Au anomalies. The gold mineralized bodies are mainly occurred in the Ordovician-Silurian Nachitai Group, including carbonate rock assemblage, metamorphic detrital rock assemblage and acidic-intermediate volcanic rock. The stream sediments from anomaly areas Hs65 and Hs93 show obvious three-level zoning with high anomaly intensity. The 1:10 000 soil survey reveals high soil anomaly intensity of Au, Cu, As and Sb, with overlapped anomaly curves. One gold orebody and six mineralized bodies are verified and controlled by surface trenching engineering. With comprehensive analysis on the ore-forming geological conditions and geochemistry in northern Xiaohongshan, it is promising to find gold deposits with further exploration in the study area.