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。
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.
出处
《大地构造与成矿学》
EI
CAS
CSCD
1999年第4期308-314,共7页
Geotectonica et Metallogenia
