| 峪耳崖金矿的成矿时代裂变径迹研究 |
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| 关键词:Yuer'ya gold deposit hydrothermal liquid fission track analysis |
| 基金项目:国家自然科学基金(10175076、40072068)，中国科学院核分析技术开放实验室 |
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| 摘要: |
| Fission Track Age of the Yuerya Gold Deposit |
| The Fission Track (FT) method is an analyzing means for revealing the thermal history of geological bodies by some 238U-doped minerals such as apatite and zircon and for determining their ages when the rock bodies remain in the annealing temperature ranges of these minerals. In this paper, the fission track analysis of zircon and apatite from Yuer'ya gold-doped rock samples discloses multi-phase hydrothermal liquid activities since the Yanshanian period, when the hydrothermal liquids with the zircon annealing temperature were related to gold precipiation.Zircon FT ages show that gold mineralization lasted from 115 Ma to 200 Ma and the main mineralization phases were 115～190 Ma.The relationship between the zircon FT ages and the horizontal and vertical distribution of the samples suggests that the hydrothermal liquids came from the deep underground resources and that some surface-water participation took part in gold mineralization.The cooling of hydrothermal liquids proceeded from north to south, indicating that the hydrothermal liquids came from the south. |
| TANG Yu-hui,YUAN Wan-ming,HAN Chun-ming,DONG Jin-quan,WANG Shi-cheng.2003.Fission Track Age of the Yuerya Gold Deposit[J].Acta Geoscientica Sinica,24(6):573-578. |
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