| 孙景贵.胶东地区地质体的含金性与金成矿关系[J].地质找矿论丛,1999,(2):43-54 |
| 胶东地区地质体的含金性与金成矿关系 |
| RELATIONS OF GOLD ABUNDANCE IN GEOLOGIC BODIES TO GENESIS OF GOLD DEPOSITS, JIAODONG |
| 投稿时间：1991-01-08 修订日期：1991-04-01 |
| DOI：10.6053/j.issn.1001-1412.1999.2. 007 |
| 中文关键词: 地质体 含金性 活化迁移 胶东 |
| 英文关键词:geological body Au bearing property mobilization Jiaodong |
| 基金项目:国家自然科学基金;国家教委基金 |
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| 中文摘要: |
| 本文以新近的测试分析资料为基础,较系统地论述了胶东金矿集中区地质体的含金性。大量的测试资料表明:变质岩和地层中金的丰度并非很高(w(Au)1.9×10-9～4.5×10-9,而与金矿有关的花岗岩金的量更低(w(Au)0.27×10-9～1.83×10-9.地质体的成因、演化与金矿化的相互关系,表现随岩石成分向酸性变化和碱交代程度增加过程,金及相关成矿元素的含量降低;花岗岩形成过程和碱交代作用过程是促使金活化转移的主要过程,断裂活化、深部流体作用导致岩体的“去根”可能是金进一步成矿的重要机制。 |
| 英文摘要: |
| The paper deals with the gold abundance in the geologic bodies of the gold deposit concentrated zone in Jiaodong Area on the basis of recent new analytical data. It shows that the gold abundance in the metamorphic rocks or strata is rather low(1.9-4.5×10-9 in average), and in the relevant granites is only 0.27-1.83×10-9 in average. The gold contents decrease with increasing granitization, migmatization and amount of felsic minerals. the granitization and alkali metasomatism are the main process for gold mobilization. Faulting activation and deep leaching by which mineralizing elements were out of the bodies' root are the possible major mechamism for mobillization of gold. |
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