| 海南岛中生代地洼期构造与金银多金属成矿特征 |
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| 引用本文： | 龙文国.海南岛中生代地洼期构造与金银多金属成矿特征[J].大地构造与成矿学,1999,23(4):308-314. |
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| 作者姓名： | 龙文国 |
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| 作者单位： | 海南地矿局,海南,海口,570206 |
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| 摘 要： | 海南岛地洼活动始于二叠纪末，白垩世达到剧烈期。经历了基性一中性，中一酸性岩浆喷发及侵人和基性岩浆活动三个阶段。时空分布由南向北迁移。区内发育四种金、银、多金属矿床：（1）多因复成型；（2）隐爆角砾岩型；（3）热液型；（4）矽卡岩型。矿体产于断裂构造内，与酸偏碱性侵人岩相伴生。
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| 关 键 词： | 地洼活动 金银矿床 多金属矿床 海南岛 |
| 文章编号： | 1001－1552(1999)04－0308－07 |
CHARACTERISTICS OF MESOZOIC DIWA TECTONICS AND Au-Ag POLYMETALLIC DEPOSITS IN HAINAN PROVINCE,CHINA |
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| LONG Wen-guo.CHARACTERISTICS OF MESOZOIC DIWA TECTONICS AND Au-Ag POLYMETALLIC DEPOSITS IN HAINAN PROVINCE,CHINA[J].Geotectonica et Metallogenia,1999,23(4):308-314. |
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| Authors: | LONG Wen-guo |
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| Abstract: | The activity of Mesozoic diva tectonics in Hainan Island is believed to begin in Late Permian with its maximum-mobility period from Early Jurassic to Early Quatemare and displays three stages of maglnatic evolution which began with basic-intermediate magmatism, succeeded by extensive acid eruption and intrusion, and ended with basic magmatic activity.Four kinds of An-Ag polymetallic deposits have been found, namely the polygenetic compounddeposit, the crypto-explosive breccia deposit, the hydrothermal deposit and the sham deposit. The ore bodies occur in fractures of the host rock, accompanied by meta-alkalic acid intrusion. |
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| Keywords: | Diwa activity Au-Ag deposit polymetallic deposit Hainan Island |
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