| 滇西洋拉矿区火山岩构造—岩浆类型 |
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| 关键词:mid-ocean ridge basalts ocean-island basalts ocean-island andesite |
| 基金项目:国土资源部资源与环境攻关项目,定向基金项目“滇西德钦羊拉地区铜矿成矿条件及远景预测（95－12）”课题 |
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| Tectono-Magmatic Types of Volcanic Rocks in the Yangla Ore District,Western Yunnan |
| In the Yangla ore district, the volcanic rocks were formed in the central part of Jinshajiang rift-oceanic basin.There are three kinds of tectono-magmatic types:Early Carboniferous enrichment mid-ocean ridge tholeiitic basalts (E-MORB) of Yangla Formation Complex,Late Carboniferous ocean-island calc-alkalic andesite(OIA )and ocean_island alkalic basalts(OIB) of Linong Formation Complex. OIA was produced by crystallization differtiation of OIB and E-MORB mixed magma,and part of E-MORB was formed by mass and energy exchange of OIB and N-MORB.The formation of tectono-magmatic types was related to the mantle plume. |
| WEI Jun-qi,CHEN Kai-xu,HE Long-qing.1999.Tectono-Magmatic Types of Volcanic Rocks in the Yangla Ore District,Western Yunnan[J].Acta Geoscientica Sinica,20(3):246-252. |
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