新疆东昆仑三岔顶地区水系沉积物地球化学特征及找矿方向研究

Study on Geochemical Characteristics and Ore Prospecting Direction of Stream Sediment in Sanchading Area in East Kunlun in Xinjiang Xinjiang Uygur Autonomous Region

摘要:

通过开展三岔顶一带1∶5万水系沉积物测量，分析了研究Au,Ag,Cu,Pb,Zn,W,Sn,Mo,As,Bi,Sb,Cr,Ni,Co,Hg,Cd共16种元素地球化学参数特征及其相关性，认为该区元素的富集与地层、构造、岩浆岩明显相关;Hg,Cr,Ni,W,As,Au,Pb,Zn等元素变异系数较大，易于形成异常;Ag,As,Au,Co,Cr,Cu,Hg,Ni,Sb,Zn等10种元素不同程度富集，成矿可能性大。通过因子分析，提取了6种具有代表性的因子组合类型，讨论了各元素空间分布特征。全区共圈定31处地球化学综合异常，在综合异常查证的基础上，结合区域成矿地质条件、矿产地质特征，圈定出寒凝泉铬钴镍铜、黄沙河东铜银钼铅多金属、月牙湾铜银铅锌多金属3处找矿远景区，为该地区进一步开展找矿工作提供了基础地球化学依据。

Abstract:

Based on stream sediment measurement of Sanchading area with the scale of 1∶50000, geochemical characteristics and the relationships between 16 elements have been studied, they are Au,Ag,Cu,Pb,Zn,W,Sn,Mo,As,Bi,Sb,Cr,Ni,Co,Hg and Cd. It is regarded that the enrichment of elements has obvious relation with the formation, strutures and magmatic rocks. The coefficient of variation of Hg,Cr,Ni,W,As,Au,Pb and Zn is large, which is easy to form abnormal. Ag,As,Au,Co,Cr,Cu,Hg,Ni,Sb,Zn are enriched to varying degrees with high metallogenic possibility. Based on the factor analysis, six representative factors combination types have been extracted, and the spatial distribution characteristics of each element has been studied. 31 comprehensive geochemical anomaly have been circled based on anomaly verification. Combining with regional metallogenic geological conditions and geological characterisitcs, three ore prospecting areas have been circled, they are Hanningquan Cr-Co-Ni-Cu prospecting area, Huangshahedong Cu-Ag-Mo-Pb polymetallic prospecting area and Yueyawan Cu-Ag-Pb-Zn polymetallic prospecting area. It will provide gochemical basis for the direction of prospecting work in the future.