| 川西北地区马脑壳金矿床的成矿年代学 |
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| 引用本文： | 季宏兵,王世杰,文锦明.川西北地区马脑壳金矿床的成矿年代学[J].矿物岩石地球化学通报,1999(2). |
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| 作者姓名： | 季宏兵 王世杰 文锦明 |
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| 作者单位： | 中国科学院地球化学研究所，四川省地质矿产局川西北地质大队 |
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| 摘 要： | 沉积容岩微细浸染型（ＳＨＤＧ）金矿床（或称卡林型金矿床），广泛分布于各大洲的许多古代和现代的地体（地块）周边，如美国的大盆及中国的黔西南和川西北的金矿床，是经济上非常重要的一种金矿类型。关于ＳＨＤＧ金矿床物质来源和成因一直存在着较大的争议，目前存在三...
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| 关 键 词： | Rb-Sr同位素体系 成矿年龄 成矿物源 川西北 |
The Metallogenic Chronology for the Manaoke Gold Deposit in the Northwestern Sichuan Province |
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| Ji Hongbing,Wang Shijie.The Metallogenic Chronology for the Manaoke Gold Deposit in the Northwestern Sichuan Province[J].Bulletin of Mineralogy Petrology and Geochemistry,1999(2). |
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| Authors: | Ji Hongbing Wang Shijie |
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| Abstract: | The metallogenic chronology has long bee n an essential problem inv olved in study of micro fine disseminated gold deposits hosted in sedimentary r ocks. In this note exploration is based on researches on the Rb Sr isotopic sys tem of quartz vein formed at hydrothermal stage in the Manaoke micro fine diss eminated gold deposit. It is suggested that the age of ore deposit( t =46 Ma) is the early stage orogenesis in the Tibetan Himalayas, in which it is coupled with the evolution of Neo Tethyan basin and the third period metamorphism in th e Songpan Ganzi orogenic belt. It is also suggested that the ore forming mate rial may have come from the deep source (magma driven hydrothermal circulation) . It is further deduced that the deposit is a distal portion of magmatic hydroth ermal systems. |
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| Keywords: | Rb Sr isotopic system the age of ore forming material source the northwestern Sichuan |
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