| 河北张－宣金矿区含金石英脉40Ar/39Ar年龄 |
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| 引用本文： | 胡达骧,罗桂玲.河北张－宣金矿区含金石英脉40Ar/39Ar年龄[J].地质科学,1994,29(2):151-158. |
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| 作者姓名： | 胡达骧 罗桂玲 |
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| 作者单位： | 冶金工业部第一地质勘查局地质矿产研究所, 北京101601 |
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| 摘 要： | 为解决张-宣地区含金石英脉形成的时代,对区内5个典型金矿脉测定了40Ar/39Ar年龄,分别为:1362.0±24.8Ma,963.7±22.3Ma,579.6±8.5Ma,570.8±24.2Ma,167.9±1.2Ma.谱线特征均为马鞍形,最低视年龄为石英的结晶年龄。依次相当于晋宁运动中期,晋宁运动晚期,蓟县运动晚期和燕山运动中期。
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| 关 键 词： | 河北张－宣金矿区 含金石英脉 40Ar/39Ar年龄 |
| 收稿时间： | 1992-11-28 |
| 修稿时间： | 1992-11-28; |
40Ar/39Ar AGES OF GOLD-BEARING QUARTZ VEINS AND THEIR GEOLOGICAL SIGNIFICANCE IN TYPICAL GOLD DEPOSITS OF ZHANGJIAKOU-XUANHUA GOLD FIELD,HEBEI PROVINCE |
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| Hu Daxiang,Luo Guiling.40Ar/39Ar AGES OF GOLD-BEARING QUARTZ VEINS AND THEIR GEOLOGICAL SIGNIFICANCE IN TYPICAL GOLD DEPOSITS OF ZHANGJIAKOU-XUANHUA GOLD FIELD,HEBEI PROVINCE[J].Chinese Journal of Geology,1994,29(2):151-158. |
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| Authors: | Hu Daxiang Luo Guiling |
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| Institution: | Institute of Geological Exploration Tecknology of the First Geological Prospecting Bureau, Ministry of Metallurgical Industry, Beijing 101601 |
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| Abstract: | n order to solve the problem of formation age of gold-bearing quartz in ZhangjiakouXuanhua district, we have adopted fast-neutron activation method to test 40Ar/39Ar ages of five typical gold deposits in the district and obtained five age data:1362.0?24.8Ma, 963.7?22.3Ma, 579.6?8.5Ma, 570.8?24.2Ma and 167.9?1.2Ma. Spectrum lines are characterized by the form of saddle. The oldest is the crystallization age of quartz. The mineralization epoch is thus inferred to be four stages which correspond to the early and the late stages of Jining Movement, the late stage of Jixian Movement, and the late stage of Yanshanian Movement successively. The deposits include metamorphic and magmatic-thermal gold deposits. |
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| Keywords: | 40Ar/39Ar ages" target="_blank">40Ar/39Ar ages')" href="#">40Ar/39Ar ages Gold-bearing quartz vein Zhangjiakou-Xuanhuagold area Hebei |
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