| 浅论湖南省银异常分布特征和找矿方向 |
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| 引用本文： | 张子清.浅论湖南省银异常分布特征和找矿方向[J].湖南地质,1991,10(3):229-234. |
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| 作者姓名： | 张子清 |
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| 作者单位： | 湖南省地质矿产局物探队 邵阳422002 |
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| 摘 要： | 湖南省银矿床银主要来源于岩浆源,已发现的银矿床主要有三类:矽卡岩型银铅锌矿床,脉状热液型银铜铅锌矿床,斑岩型银多金属矿床。银矿的分布受大地构造的控制:属扬子准地台上扬子台褶带的湘西北区无岩浆侵入活动,无银矿点分布,也末发现银异常;属扬子准地台江南台隆的雪峰古陆过渡区,银异常密集分布,强度中等,系沉积型含银的钒磷矿分布区,尚未发现工业银矿床,属华南褶皱系赣湘桂粵褶皱带的湘中、湘南、湘东区,银异常呈点状分布,强度大,是主要岩浆源型银矿分布区,是银矿找矿的重点地区。
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| 关 键 词： | 银矿 地球化学异常 勘探 湖南 矿床 |
ELEMENTARY DISCUSSION ON THE DISTRIBUTION OF SILVER ANOMALIES IN HUNAN PROVINCE AND DIRECTION OF PROSPECTING |
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| Zhang Ziqing.ELEMENTARY DISCUSSION ON THE DISTRIBUTION OF SILVER ANOMALIES IN HUNAN PROVINCE AND DIRECTION OF PROSPECTING[J].Hunan Geology,1991,10(3):229-234. |
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| Authors: | Zhang Ziqing |
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| Institution: | Geophysical Exploration Team of Hunan Bureau of Geology and Mineral Resources |
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| Abstract: | The silver of the silver deposits in Human province is mainly derived from magma sources. The silver deposits proved can be grouped into three types: Skarn type silver-lead-zinc deposit, Hydrotermal vein type silver-copper-lead-zinc one and porphyry type silver-polymetallic one. The distribution of sliver deposits is controlled by the geotectonic setting: In the Northwestern Hunan, which is a part of Upper Yangtze platformal fold belt of Yangtze sub-platform, without magmatic intrusion, there is no occurrence of silver deposit, even silver anomalies; The Xuefeng old landmass transition region, which is a part of Jiangnan platform uprise of Yangtze sub-platform, yields silver-bearing sedimentary type vanadium-phosphorus mineralizations, with condensed silver anomalies, medium in intensity, but no economic silver deposit has been found yet; while the Central, Southern and Eastern parts of Hunan, which belong to Gan-Xiang-Gui-Yue fold belt of South China told system, are the main magma-derived silver deposit-distributing region, with high-intensity silver anomalies occurring dotted, which is considered to be the key prospect for silver deposits. |
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| Keywords: | Silver Geochemical exploration Direction of prospecting Geochemical anomaly |
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