| 东南亚中南半岛锡矿带成矿特征 |
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| 引用本文： | 陈喜峰,向运川,叶锦华,蔡纲,陈秀法,张振芳,李娜,张新元.东南亚中南半岛锡矿带成矿特征[J].地质通报,2015,34(4):734-745. |
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| 作者姓名： | 陈喜峰 向运川 叶锦华 蔡纲 陈秀法 张振芳 李娜 张新元 |
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| 作者单位： | 中国地质调查局发展研究中心，北京100037 |
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| 基金项目： | 中国地质调查局项目（编号:1212011220912） |
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| 摘 要： | 东南亚中南半岛位于特提斯成矿域和西环太平洋成矿域的相交地带,在印支—喜山期发生了多期次俯冲、碰撞造山成矿作用,发育多个与中酸性岩浆活动密切相关的锡(钨)岩浆热液成矿系统,形成了世界著名的东南亚中南半岛锡矿带。研究区自西向东依次可划分为抹谷—毛淡棉—德林达依—普吉锡矿带、景栋—清莱—清迈锡矿带和越北—长山—昆嵩—大叻锡矿带三大锡矿带及7个锡矿亚带,锡矿化花岗岩多为高度分异演化的重熔型铝过饱和花岗岩类,具有多硅、富碱、多挥发分、高钾、87Sr/86Sr初始比值高、Rb/Sr值高、相对明显富集Be、Bi、Cu、Mo、Pb、Sn、Y、Zn等元素的特点。锡矿体主要分布于S型花岗岩与围岩的内、外接触带。锡矿床成矿类型主要有热液脉型、矽卡岩型、锡石—硫化物型、云英岩型、伟晶岩—细晶岩型等。从海西晚期到喜山早期都有锡的成矿事件发生,以燕山期锡成矿作用为主,成矿构造环境主要为岛弧环境和大陆边缘碰撞造山环境。
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| 关 键 词： | 锡矿带 成矿特征 S型花岗岩 东南亚中南半岛 |
Metallogenic characteristics of the Central South Peninsula tin ore belt in Southeast Asia |
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| CHEN Xifeng,XIANG Yunchuan,YE Jinhu,CAI Gang,CHEN Xiuf,ZHANG Zhenfang,LI N,ZHANG Xinyuan.Metallogenic characteristics of the Central South Peninsula tin ore belt in Southeast Asia[J].Geologcal Bulletin OF China,2015,34(4):734-745. |
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| Authors: | CHEN Xifeng XIANG Yunchuan YE Jinhu CAI Gang CHEN Xiuf ZHANG Zhenfang LI N ZHANG Xinyuan |
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| Institution: | Development and Research Center, China Geological Survey, Beijing 100037, China |
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| Abstract: | Located at the intersection between the eastern part of the Tethyan tectonic domain and the Circum Pacific tectonic domain, the Central South Peninsula of Southeast Asia experienced multi-stage subduction and collisional orogenic activities that led to the formation of a series of W-Sn magmatic hydrothermal ore-forming systems related to the intermediate-acidic magmatism from Indosinian to Himalayan period and the generation of abundant Sn mineral resources. The Central South Peninsula tin ore belt of Southeast Asia can be divided into three tin metallogenic zones, i.e., the Mogok-Mawlamyine-Tanintharyi-Phuket tin metallization zone, the Jengtung-Chiang Rai-Chiang Mai tin ore-forming zone and the northern Viet Nam-Truong Son-Kon Tum-Da Lat tin ore-forming zone. The tin metallization is related to S-type granite. The tin ore-forming S-type granite belongs to remelted aluminium supersaturation granites characterized by rich silicon and alkali, high volatile content, high-K, high initial ratios of 87Sr/86Sr, high ratios of Rb/Sr and relatively enrichment of Be, Bi, Cu, Mo, Pb, Sn, Y and Zn elements. The tin orebodies are distributed mainly in the inner and outer contact zone between S-type granite and wall rock. The main metallogenic types of the tin deposits include hydrothermal vein type, skarn type, cassiterite-sulfide type, greisen type and pegmatite-aplite type. The ore-forming tectonic environment of tin deposits seems to have been the island arc environment and epi collisional orogenic environment. |
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| Keywords: | tin ore belt metallogenic characteristics S type granite Central South Peninsula of Southeast Asia |
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