| 微细浸染型（卡林型）金矿成矿过程中碳和有机质的作用 |
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| 引用本文：.1996.Metallogenic regularity of gold and silver deposits in western Guangdong[J].Mineral Deposits,15(3):193~206 |
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| 基金项目:国家计委国土司专项补助第30届国际地质大会科研项目96-30-36(1) |
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| 中文摘要:在众多关于黔滇桂微细浸染型（卡林型）金矿研究成果的基础上，本文通过本类型金矿含碳及有机质的特征；金能形成金属有机化合物及原了簇化台物的特征的研究。提出金以金属有机化合物形式在本区上二叠统富含生物成冈有机质的煤系地层中形成预富集；在区域热变质作用中，金以气相金属有机化合物方式向上运移，蓄积在上二叠统至中三叠统各层位的背斜和穹窿部位；动力变质带的断裂活动引起物理化学突变，使金的气相金属有机化合物在构造断裂带解体、裂化从而形成了含细分散碳质的微细浸染型含金硫化物原生矿化；并探讨了主成矿期后与有机质解体有关的叠加热液活动和表生氧化作用对原生矿化的改造。从而从有机质演化角度初步建立了此类型的成矿模式。 |
| 中文关键词:微细浸染型金矿 金属有机化合物 气相运移 有机质演化 成矿模式 |
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| Metallogenic regularity of gold and silver deposits in western Guangdong |
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| Abstract:Western Guangdong is an area where gold and silver deposits occur concentratedly. In this area, gold deposits and silver (gold) polymetallic deposits are arranged alternately: from south to north, there exist five metallogenic belts: silver (gold) polymetallic ore belt of Lianjiang area, Gaozhou-Xinyi gold ore belt, Luoding-Yunfu silver (gold) polymetallic ore belt, Deqing- Qingyuan gold ore belt, and silver (gold) polymctallic ore belt of Lianshan area. In the light of regional strata, magmatic rocks and ore-forming processes, the present paper has made a relatively thorough discussion on the distribution regularity of gold and silver deposits. It is held that the main factors affecting the distribution of gold and silver deposits are discrepancies in gold and silver contents of different strata and magmatic rocks as well as differences in metallogenesis between gold deposits and silver (gold) polymetallic deposits. |
| keywords:western Guangdong, gold deposit, silver (gold)-polymetallic deposit, metallogenic regularity |
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