普迟亚地区水系沉积物测量地球化学特征及找矿方向

GEOCHEMICAL CHARACTERISTICS AND ORE SEARCH PROSPECTS OF PUCHIYA AREA IN TIBET BASED ON STREAM SEDIMENT SURVEY

在1∶5万水系沉积物测量的基础上,对西藏谢通门普迟亚地区的地球化学特征进行了初步分析。对元素分布特征、单元素异常特征、元素相关性分析、异常元素组合特征进行了研究。研究发现Pb、Zn、Cu为区内具一定潜力的找矿指标。推断区内可能的成矿类型为火山岩型铅锌多金属矿和与酸性侵入岩有关的斑岩型铜多金属矿,优选了展咱木部铅锌找矿远景区和色药铜(钼)找矿远景区。

This preliminary study of the geochemical features in Puchiya area, Xaitongmoin, Tibet, was based on the 1： 50 000 stream sediment survey. It included element distribution characteristics, element anomalies, element correlation and element anomaly assem- blage. The result shows that the study area might be a prospective area for Pb, Zn and Cu. It is inferred that ore deposits in Puehiya area are probably volcanic type lead-zinc polymetallic deposits and acidic intrusive-associated porphyry copper polymetallic ore deposits. The Zhanzanmubu area is expected to be a prospective area for volcanic type lead-zinc polymetallic deposits and the Seyao area is likely to have copper polymetallic ore deposits associated with intermediate-acidic intrusive rocks.