| 西藏多不杂矿集区斑岩铜矿地球化学指标研究 |
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| 关键词:Dobzha ore district porphyry copper deposit geochemical indicator Tibet |
| 基金项目:国家973项目(编号: 2011CB403103)；国家科技支撑课题(编号: 2006BAB01A05)；中国地质调查局青藏专项“西藏班公湖-怒江成矿带找矿远景区评价”(编号: 1212010818097) |
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| 摘要: |
| Geochemical Indicators of Porphyry Copper Deposits in the Dobzha Ore Concentration Area, Tibet |
| The Dobzha ore-concentration area in northern Geize County of Tibet is composed of superlarge porphyry copper deposits discovered in recent years. In an area 30 km long in EW direction and 10 km wide in NS direction with Dobzha as the center, there are seven copper deposits, i.e., Dobzha, Bolong, Sena, Nadun, Naruo, Gaerqin and Tiegelong. On the basis of previous work and through the rotating orthogonal factor analysis of geochemical data of the core rock samples and the correlation analysis between the metallogenic elements such as Cu and rare earth elements La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu and Y and trace elements U and Th, the authors have found that LREE and HREE show relative enrichment in the position of Cu ore (mineralization) body, so do trace elements U and Th , especially Th, which show some positive correlation with Cu with the increasing drilling depth. It can be inferred that the rare earth elements and trace elements U and Th might serve as potentially effective geochemical indicators in mineral exploration. |
| WU De-xin,ZHAO Yuan-yi,LIU Chao-qiang,XU Hong,LI Yu-chang,LI Yu-bin,LEI Xiao-guang.2012.Geochemical Indicators of Porphyry Copper Deposits in the Dobzha Ore Concentration Area, Tibet[J].Acta Geoscientica Sinica,33(2):185-196. |
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