| 黑龙江萝北县岛状冻土带砂金分布特征及其成因探讨 |
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| 引用本文： | 张海心,余友,牛军平.黑龙江萝北县岛状冻土带砂金分布特征及其成因探讨[J].吉林地质,2004,23(2):15-20. |
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| 作者姓名： | 张海心 余友 牛军平 |
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| 作者单位： | 黑龙江有色金属地质勘察研究总院,黑龙江,哈尔滨,150046;吉林省勘查地球物理研究院,吉林,长春,130012 |
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| 摘 要： | 本文介绍了萝北县冻土区砂金矿的区域地质背景及区域水化学特点，特别是砂金与水pH值的关系，探讨了砂金分布规律、成因和演化，确定了冻土区砂金矿的物质来源于中元古变质岩，并说明高寒冻土某些特殊机制有利于金的活化、迁移和富集并能重复开采(即“再生”)的原因。
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| 关 键 词： | 砂金矿 演化 活化 迁移 化学增生 冻土区 |
| 文章编号： | 1001-2427(2004)02-0015-06 |
The distributive characteristics of the placer gold in the island frozen soil layer in the Luobei,Heilongjiang Province and its origin |
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| ZHANG Hai-xin.The distributive characteristics of the placer gold in the island frozen soil layer in the Luobei,Heilongjiang Province and its origin[J].Jilin Geology,2004,23(2):15-20. |
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| Authors: | ZHANG Hai-xin |
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| Institution: | ZHANG Hai-xin~ |
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| Abstract: | The regional geologic setting and hydrochemical characteristics of the placer gold in the frozen soil layer in the Luobei County are introduced in this paper. The distributive law, origin and evolution of the placer gold are discussed. It is definite that placer gold in the frozen soil belt is derived from the meso-Proterozoic metamorphic rocks, explaining some reasons that some special mechanisms are beneficial to the reactivation of the gold, migration, enrichment and reexploitation. |
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| Keywords: | placer gold deposit evolution reactivation migration chemical overgrowth frozen soil belt |
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