| 武玉海,葛良胜,邢俊兵,邹依林,郭晓东,李振华.滇西北与新生代富碱斑岩体(脉)有关的金矿床区域成矿模式[J].地质找矿论丛,2004,(3):159-167 |
| 滇西北与新生代富碱斑岩体(脉)有关的金矿床区域成矿模式 |
| METALLOGENIC MODEL OF CENOZONIC ALKALI-RICH PORPHRIES-RELATED Au DEPOSITS IN NORTHWEST YUNNAN PROVINCE, CHINA |
| 投稿时间：2003-10-31 |
| DOI：10.6053/j.issn.1001-1412.2004.3. 004 |
| 中文关键词: 成矿模式 金矿床 滇西北地区 喜山期 富碱斑岩体(脉) (近)EW向隐伏构造 |
| 英文关键词:metallogenic system alkali-rich porphries Cenozonic north western Yunnan province E-W buried structure |
| 基金项目: |
| 作者 | 单位 | | 武玉海 | 武警黄金地质研究所, 河北, 廊坊, 065000 | | 葛良胜 | 武警黄金地质研究所, 河北, 廊坊, 065000 | | 邢俊兵 | 武警黄金地质研究所, 河北, 廊坊, 065000 | | 邹依林 | 武警黄金地质研究所, 河北, 廊坊, 065000 | | 郭晓东 | 武警黄金地质研究所, 河北, 廊坊, 065000 | | 李振华 | 武警黄金地质研究所, 河北, 廊坊, 065000 |
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| 中文摘要: |
| 滇西北地区与富碱岩体(脉)有关的金矿床受控于喜山期区域近EW向隐伏构造,体现出成岩成矿构造控制一体化的特征。研究表明,富碱岩浆源于深部的壳幔混合层,是地幔富碱质流体经由深大断裂上升并激发源区岩石部分熔融的产物,生成于经长期板块相互作用而形成的统一但不稳定的陆块内部。成矿流体亦主要源于地幔,矿质则地幔与岩浆源区兼而有之,流体致浆、岩浆形成之后的分异演化及至侵入就位的过程实际上就是含矿流体与岩浆从相伴、相融、上升到分离、流体中矿质不断聚集从而演变成含矿热液并最终成矿的过程。 |
| 英文摘要: |
| The Cenozonic alkali-rich porphries were formed by partial melting (and/or alkali-metasomatism) of the source rocks in the deep-crust and upper-mantle by the mantle-derived hydrothermal alkali fluids migrated up along the deep faults (mainly about EW trend) and into the crust-mantle belt(mixed layer or transition zone). It is considered that the EW trend deep faults were the result of activation of ancient structures in the cenozoic special geological and geographical position as one of results of areal stress adjust, which are insidious faults. The fluids (it might contain some gold) continued to move up though melting body or accompanying the intrusion of the alkali-rich magma and obtained the gold of the rocks the fluids passed by metasomatism, extraction and remobilization and changed into ore-bearing hydrotherma fluid. When the hydrothermal fluid moved into some favorable space around the porphry body (vein) in shallow part of crust, a series of gold(and other metal) deposits varied in types and size were formed. the mrtallogenic model of gold deposit related to Cenozonic alkali-rich porphries in north-western Yunnan province, is erected in this paper. |
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