| 陕西洛南洛源原生金地球化学异常特征与洛河砂金矿预测 |
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| 引用本文： | 孙继东
,郑启平.陕西洛南洛源原生金地球化学异常特征与洛河砂金矿预测[J].地球科学与环境学报,1987(3). |
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| 作者姓名： | 孙继东 郑启平 |
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| 摘 要： | 洛源原生金地球化学异常具有浓集中心分散、规模小、几何浓度内带大面积出露、组分较复杂和水平分带不清等特征,表明洛源金矿化主要为分散矿化,而且具较大的剥蚀深度。金的原生地球化学异常源为小的含金断裂构造带。地球化学异常区的冰川活动,加速了此区的剥蚀作用。洛河砂金矿是在上淤汇水盆地中金的分散矿化被强烈剥蚀下形成的。金的分散矿化范围大,空白水系少,稀释作用受仰制,为洛河砂金矿形成创造了良好的条件。从洛河的淘金历史和现状以及对砂金的总量预测来看,洛河砂金矿是很有远景的。
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| 关 键 词： | 地球化学异常 剥蚀深度 砂金矿 分散矿化 汇水盆地 |
CHARACTERISTICS OF ORIGINAL GOLD GEOCHEMICAL ANOMALY IN LUOYUAN, LUONAN COUNTY, SHAANXI, AND PROGNOSTICATION OF GOLD-BEARING PLACER IN LUOHE RIVER |
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| Sun Jidong Zheng Qiping.CHARACTERISTICS OF ORIGINAL GOLD GEOCHEMICAL ANOMALY IN LUOYUAN, LUONAN COUNTY, SHAANXI, AND PROGNOSTICATION OF GOLD-BEARING PLACER IN LUOHE RIVER[J].Journal of Earth Sciences and Environment,1987(3). |
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| Authors: | Sun Jidong Zheng Qiping |
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| Institution: | Xi'an College of Geology |
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| Abstract: | The original gold geochemical anomaly in Luoyuan, Shaanxi, is characterised by the dispersion of its accumulation centre, the small-scale, the occurrence in a large area within its geometric density belt,the more complicated components and the dimness in the level zoning. These show that the gold mineralization in Luoyuan is mainly a dispersive mineralization and its denudation depth is considerably deep. The source of the original old geochemical anomaly is a small gold-bearing frature belt. The glacier movement in the geochemical anomaly area accelerated the denudation in the area. The Luohe gold-bearing Placer was formed by the intensive denudation of the dispersive mineralization of gold in the upper catchpit. There is a largescale area of the gold dispersive mineralization, and there is a little empty water system. The diluting effect is restrained. All these lay a significant foundation for forming Luohe placer goldbearing. According to the panning history and its present situation of the Luohe River, as well as the general prognostication for placer gold. The Luohe placer gold deposit promises to be more exciting. |
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| Keywords: | geochemical anomaly denudation depth gold-bearing placer dispersive mineralization catchment basin |
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