青海拉脊山大马鸡沟地区地质特征及找矿标志

摘要

Based on the 1:10000 soil geochemical measurements of the gold deposits in the DamaJigou area of the Laji Mountain,four comprehensive soil anomalies were delineated.Combined with the large-scale field mapping,the rock profileand the trenching exploration,we have a good knowledge of the stratigraphic distribution and the geological structure in the anomaly area.Moreover,we evaluated the geological conditions for mineralization in DamaJigou area and initially delineated the distribution range of the altered zones and the gold ore bodies.In addition,combined with the regional geological background in DamaJigou area,the geological conditions for mineralization in the DamaJigou area were comprehensively studied.The potential for prospecting in the area was evaluated,and the prospecting indicators was established.%通过对拉脊山大马鸡沟地区金矿开展1:1万土壤地球化学测量,圈定了四处土壤综合异常,结合成矿地质条件通过大比例尺地质草测、岩石剖面以及槽探工程对异常进行解析,掌握了异常范围内的地层分布、地质构造等特征,对大马鸡沟地区成矿地质条件进行了评价,并初步圈定了蚀变破碎带及金矿(化)体的分布范围和数量;此外,结合拉脊山一带区域地质背景,综合研究大马鸡沟地区成矿地质条件,对该区找矿潜力进行了评价,建立了找矿标志.