地质找矿论丛2023，Vol.38Issue(4)：495-502,8.DOI:10.6053/j.issn.1001-1412.2023.04.011
西藏昌都地区水系沉积物异常特征与成矿地质条件分析
Characteristics of river sediment anomaly in Changdu area,Tibet and analysis of metallogenic geological condition of the area
摘要
Abstract
Changdu area of Tibet is located in the northern section of North Qiangtang-Changdu metallo-genic belt,and tectonically located between Lancang River structural belt and Jinsha River junction belt.In the area Upper Triassic and Jurassic strata are shallowly metamorphosed,folds and lamprophyre dikes are developed.Analysis of the regional metallogenic background and characteristics of river sediment a-nomaly shows that dynamic background of lamprophyre dike in Changdu area is similar to that of ore-bearing porphyry in Yulong Cu deposit.River sediment anomaly in the area is dominated by Sn、W、Pb、Zn、Ag and accompanied by Au、Hg、Sb etc.At anomaly Ritong low temperature element and high tem-perature element are separatly zoned and Bi、Sb、Pb、Ag anomaly is in large size with high values of aver-age,maximum and contrast and possibly ore-caused Cu-Mo mineralization and ore occurrences have been located thus the anomaly should be furtherly checked and assessed.关键词
水系沉积物/煌斑岩脉/成矿地质条件/昌都地区/西藏Key words
stream sediment/lamprophyre dike/metallogenic geological condition/Changdu area/Ti-bet分类
天文与地球科学引用本文复制引用
王纪昆,张晓鹏,王建青,刘建,冀建军..西藏昌都地区水系沉积物异常特征与成矿地质条件分析[J].地质找矿论丛,2023,38(4):495-502,8.基金项目
中国地质调查局项目"西藏昌都地区1∶5万昂地幅(H47E004005)、郎达幅(H47E005005)区域地质调查"(编号:DD20160016-02)资助. （H47E004005）
