| 沈保丰.早前寒武纪花岗岩—绿岩地体中金的成矿作用[J].地质找矿论丛,1988,(2):1-11 |
| 早前寒武纪花岗岩—绿岩地体中金的成矿作用 |
| GOLD MINERALIZATION OF THE EARLY PRECAMBRIAN GRANITOID-GREENSTONE TERRAINS |
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| DOI：10.6053/j.issn.1001-1412.1988.2. 001 |
| 中文关键词: 花岗岩-绿岩地体 绿岩带 原生金矿床 再生金矿床 |
| 英文关键词: |
| 基金项目: |
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| 中文摘要: |
| 早前寒武纪花岗岩-绿岩地体中赋存着丰富的金矿床。我国绿岩带主要分布在华北陆台,也是重要的含金岩系。产在花岗岩-绿岩地体中的金矿可分为绿岩带中的原生和再生金矿床两大类。金矿的形成是多阶段成矿作用的产物。 |
| 英文摘要: |
| In the world a lot of gold deposits occur in the early Precambrian greenstone belts. Greenstone belts in China, being widely distributed in the North China Platform, are the main gold-bearing rockseries. The Chinese greenstone belts can be correlated to those in other countries, for instance,Abitibi, Norseman-Wiluna and so on, although they have no komatiite at their base. They aremetamorphosed to higher grade, small in area, and late intensive tectonic-magmatic activity tookplace within them. On the basis of ore material resources and metallogeny, gold deposits occurred in the earlyPrecambrian granitoid-greenstone terrians are classified as the primary and regenerated deposits. Theprimary are the product of the definite stage of geological process which brought about the granitoid-greenstone terrains. Generally they were formed after volcanism, at the stage in accordance withalteration of the granitoid rocks, and can be subdivided into two types i. e. the stratabound golddeposit and the lodes located in shear zones. The regenerated, the product of endogenesis andepigenesis of the subsequent geological events, can be subdivided into placer, conglomeratic andanatexis magmatic gold deposits. |
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