云南个旧矿集区区域构造-岩浆演化与锡铜多金属成矿系统

徐启东; 夏庆霖; 成秋明

Volume 34 Issue 2

Mar. 2009

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XU Qi-dong, XIA Qing-lin, CHENG Qiu-ming, 2009. Tectono-Magmatic Evolution Related to Metallogenic System in Gejiu Ore-Concentration Area, Southeast Yunnan of China. Earth Science, 34(2): 307-313.

Citation:

XU Qi-dong, XIA Qing-lin, CHENG Qiu-ming, 2009. Tectono-Magmatic Evolution Related to Metallogenic System in Gejiu Ore-Concentration Area, Southeast Yunnan of China. Earth Science, 34(2): 307-313.

XU Qi-dong, XIA Qing-lin, CHENG Qiu-ming, 2009. Tectono-Magmatic Evolution Related to Metallogenic System in Gejiu Ore-Concentration Area, Southeast Yunnan of China. Earth Science, 34(2): 307-313.

Citation:

XU Qi-dong, XIA Qing-lin, CHENG Qiu-ming, 2009. Tectono-Magmatic Evolution Related to Metallogenic System in Gejiu Ore-Concentration Area, Southeast Yunnan of China. Earth Science, 34(2): 307-313.

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Tectono-Magmatic Evolution Related to Metallogenic System in Gejiu Ore-Concentration Area, Southeast Yunnan of China

XU Qi-dong^{1, 2
,},
XIA Qing-lin^{1, 2},
CHENG Qiu-ming^{1, 2}

1.
Faculty of Earth Resources, China University of Geosciences, Wuhan 430074, China
2.
State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Wuhan 430074, China

Publish Date: 2009-03-25

Abstract

Abstract

Gejiu ore-concentration area is one of the most important occurrences of Sn-Cu polymetallie mineralization in Southeast YunnarL Sn-Cu polymetallic system of mineralization in the area includes Sn-W greisen-quartz vein type, Cu-massive-sulfide cassiterite type, Cu-Sn altered-basic-rock type, and Sn-Pb-Zn vein types of deposits. The study of the relationship between the tectono-magmatic evolution and the Gejiu system of mineralization shows that Sn-Cu polymetal enrichment occurred in and near the contact zone between granite and wall rock through contact metamorphism, metasomatic and filling processes, when the composite granites invaded into folded limestones of Middle Triassic (Gejiu Formation). These metals may come from two reservoirs, i.e. granitic magma originated from the middle-lower crust in the Yenshan period and basalt-diabase-gabbro from the mantle in the Indo-Chinese period. Pulsatory magmatic activities are believed to be the main driving force for the formation of the hydrothermal system for the ore-forming progress. A regional model of mineralization is proposed in this study for assisting mineral exploration and prediction for new types of mineral deposits in this area.
- tectonic setting,
- composite magmatism,
- reservoir,
- type of mineralization,
- Southeast Vunnan.

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References(42)

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