| 峪耳崖金矿的成矿时代裂变径迹研究 |
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| 引用本文：汤云晖,袁万明,韩春明,董金泉,王世成.2003.峪耳崖金矿的成矿时代裂变径迹研究[J].地球学报,24(6):573-578. |
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| 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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| 中文摘要:通过峪耳崖金矿含矿岩体中的锆石、磷灰石裂变径迹分析，揭示了自中生代燕山期以来峪耳崖地区经历了频繁、多期次的热液活动，且与峪耳崖金矿的形成密切相关。锆石、磷灰石的裂变径迹年龄显示，金矿成矿时代主要为115～200Ma，成矿下限为82Ma。其中，115～190Ma是主要的成矿时期。成矿流体作用遍及整个岩体；流体的运移受到构造制约，具有NE—SW延伸的趋势；成矿流体具深部来源以及在地表水的参与下成矿。峪耳崖金矿的形成，与当时整个中国东部的动力学背景有关。 |
| 中文关键词:峪耳崖 金矿 成矿 裂变径迹 |
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| Fission Track Age of the Yuerya Gold Deposit |
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| Abstract: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. |
| keywords:Yuer'ya gold deposit hydrothermal liquid fission track analysis |
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