| 黑龙江省徐家村金矿床石英流体包裹体Rb-Sr等时线年龄 |
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| 引用本文： | 田丙强,王升鹏,齐忠友.黑龙江省徐家村金矿床石英流体包裹体Rb-Sr等时线年龄[J].地质与资源,2020,29(2):113-119,141. |
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| 作者姓名： | 田丙强 王升鹏 齐忠友 |
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| 作者单位： | 1. 黑龙江省区域地质调查所, 黑龙江 哈尔滨 150080;2. 成都理工大学 地球科学学院, 四川 成都 610059 |
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| 基金项目： | 黑龙江省国土资源厅项目“黑龙江省林口县徐家村金多金属矿普查”(KCZX-SDKC-2015021). |
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| 摘 要： | 徐家村金矿床位于佳木斯地块西南部，矿体赋存于晚二叠世二长花岗岩中.通过对含金石英脉石英中的流体包裹体进行Rb-Sr同位素年龄及H、O同位素测定，获取成矿年龄，探讨成矿流体来源及其与赋矿花岗岩的成因联系.结果显示：石英流体包裹体Rb-Sr等时线年龄为229±8.6 Ma，比含矿岩体形成时代（254.2±0.95 Ma、230.44±0.54 Ma）稍晚或接近.石英中H、O同位素特征显示成矿流体应为晚二叠世花岗岩浆分异出的热液，后期有少量的大气降水的加入，暗示了含矿石英脉与赋矿花岗岩体具有密切的成因联系.综合认为，成岩成矿可能发生在同一地质事件中，即与古亚洲洋板块向佳蒙地块俯冲作用有关.
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| 关 键 词： | 流体包裹体 Rb-Sr等时线 H、O同位素 黑龙江省 |
| 收稿时间： | 2019-10-10 |
Rb-Sr ISOCHRON AGE OF FLUID INCLUSIONS IN THE QUARTZ OF XUJIACUN GOLD DEPOSIT,HEILONGJIANG PROVINCE |
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| TIAN Bing-qiang,WANG Sheng-peng,QI Zhong-you.Rb-Sr ISOCHRON AGE OF FLUID INCLUSIONS IN THE QUARTZ OF XUJIACUN GOLD DEPOSIT,HEILONGJIANG PROVINCE[J].Geology and Resources,2020,29(2):113-119,141. |
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| Authors: | TIAN Bing-qiang WANG Sheng-peng QI Zhong-you |
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| Institution: | 1. Heilongjiang Institute of Regional Geological Survey, Harbin 150080, China;2. School of Earth Sciences, Chengdu University of Technology, Chengdu 610059, China |
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| Abstract: | The Xujiacun gold deposit is located in the southwest of Jiamusi block,with the orebody occurred in the Late Permian monzogranite.The metallogenic age is obtained and the ore-forming fluid source and its genetic relation with the host granite are discussed through the determination of Rb-Sr isotope age and H and 0 isotopes of fluid inclusions in the quartz of gold veins.The results show that the Rb-Sr isochron age is 229±8.6 Ma,slightly later or close to the formation time of ore-bearing rock mass(254.2±0.95 Ma,230.44±0.54 Ma).The H and 0 isotopic characteristics of quartz indicate that the ore-forming fluid was the hydrothermal solution differentiated from the Late Permian granitic magma,with a small amount of atmospheric precipitation added later,suggesting that there is a close genetic relation between the ore-bearing quartz vein and the host granite.From the above,it is believed that the diagenesis and mineralization may occur in the same geological event,both related to the subduction of Paleo-Asian 0cean Plate into the Jiamusi-Mongolia block. |
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| Keywords: | fluid inclusion Rb-Srisochron H and O isotopes Heilongjiang Province |
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