| 云南澜沧江南段火山岩演化及其铜多金属矿床的成矿特点 |
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| 引用本文：杨岳清，杨建民，徐德才，杨建华.2006.Volcanic rock evolution and metallogenic features of copper_polymetallic deposits in southern Lancang River valley, Yunnan Province [J].Mineral Deposits,25(4):447~462 |
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| 基金项目:地质矿产部定向研究项目“云南澜沧江南段火山岩带富铜块状硫化物矿床成矿地质背景成矿条件及成矿预测”和973项目（2002CB412600） |
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| 中文摘要:澜沧江南段火山岩十分发育，它们基本沿澜沧江河谷两岸分布。火山岩带形成于漫长的地质历史时期，主要有元古代、石炭纪、二叠纪和三叠纪火山岩。它们的主体形成于洋壳向大陆俯冲消减而产生的岛弧环境中。伴随火山岩浆喷溢，也从深部带来了大量有用元素，在火山岩中形成了众多矿床（点），其中以大平掌、三达山、民乐、文玉—官房等4类铜多金属矿床最有代表性，它们分别形成于不同构造环境的火山活动中，从早到晚，总体是从岛弧中心向大陆边缘，甚至向板内裂谷转移。环境不同，因而成矿作用各有其特点，这在西南三江构造_岩浆带中是十分少见的，对该带的深入研究有助于扩大区域找矿远景。 |
| 中文关键词:地质学 火山岩 岛弧 铜多金属 成矿作用 澜沧江 |
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| Volcanic rock evolution and metallogenic features of copper_polymetallic deposits in southern Lancang River valley, Yunnan Province |
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| Abstract:Volcanic rocks are extremely developed on both sides of the southern Lancang River valley. Formed in very long geological history, they mainly include Proterozoic, Carboniferous, Permian and Triassic volcanic rocks. Together with volcanic_magmatic effusion, a large number of useful elements were brought upward from the depth. Many deposits (ore spots) were formed in volcanic rocks of different geological periods. Dapingzhang, Sandashan, Minle and Wenyu_Guanfang are typical copper_polymetallic deposits, which were formed during volcanic activities of different structural environments. From Proterozoic to Triassic, volcanic activities and minera_lizations shifted from the center of the arc to the fringe of the continent. Mineralization features of these deposits were formed in volcanic activities of different environments and are hence different from each other. It is pointed out that there might exist a great vent facies in this region. |
| keywords:geology, volcanic rock, arc, copper polymetal, mineralization, Lancang River |
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