| 东北地区珍珠岩矿床成因分析 |
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| 引用本文： | 金永新,吴波,董军.东北地区珍珠岩矿床成因分析[J].地质与资源,2010,19(4):296-301. |
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| 作者姓名： | 金永新 吴波 董军 |
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| 作者单位： | 1. 辽宁省有色地质局勘察研究院, 辽宁 沈阳 110013;2. 华北地质勘查局 519 大队, 河北 保定 071051 |
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| 摘 要： | 东北地区珍珠岩矿床分布于中生代陆相盆地中,含矿层位主要为中生代早期的中酸性火山岩,沿北北东向展布.矿体形态多为似层状.矿床类型属于大陆边缘岛弧型.矿床系酸性岩浆大量释放挥发组分,经温度、压力突降后岩浆固结形成.找矿方向主要为中生代酸性火山岩,北北东向分布的一系列断陷火山盆地为找矿主要靶区.珍珠岩与球泡流纹岩、气孔流纹岩、凝灰岩、球珠岩紧密共生,系良好的找矿标志.
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| 关 键 词： | 珍珠岩 中生代陆相盆地 矿床成因 找矿方向和标志 东北地区 |
| 收稿时间： | 2010-04-06 |
ANALYSIS ON THE FORMATION OF PERLITE DEPOSITS IN NORTHEAST CHINA |
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| JIN Yong-xin,WU Bo,DONG Jun.ANALYSIS ON THE FORMATION OF PERLITE DEPOSITS IN NORTHEAST CHINA[J].Geology and Resources,2010,19(4):296-301. |
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| Authors: | JIN Yong-xin WU Bo DONG Jun |
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| Institution: | 1. Institute of Exploration, Liaoning Bureau of Nonferrous Geology, Shenyang 110013;2. No. 519 Team, North China Bureau of Geological Survey, Baoding 071051, Hebei Province, China |
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| Abstract: | The perlite deposits in Northeast China are distributed mainly in Mesozoic continental basins.The ore-bearing horizon mostly lies in the early Mesozoic acid-intermediate volcanic rocks,with orebodies as quasi-strata trending NNE.The deposits belong to marginal island arc type,formed with the sudden drop of temperature and pressure when large amount of volatile component released from the acid magma.The ore-searching might be directed to the Mesozoic acid volcanic rocks,especially the newly-formed volcanic basins with NNE extension.The bulb-shaped rhyolite,vesicular rhyolite and tuff,which are closely associated with perlite,all serve as good prospecting indicators. |
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| Keywords: | perlite Mesozoic continental basin deposit formation prospecting direction and criteria Northeast China |
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