| 狼山热水沉积型铜多金属矿床的稀土与铅同位素地球化学特征 |
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| 引用本文： | 金章东,李英.狼山热水沉积型铜多金属矿床的稀土与铅同位素地球化学特征[J].地球科学与环境学报,1998,20(3):95. |
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| 作者姓名： | 金章东 李英 |
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| 作者单位： | 南京大学成矿作用国家重点实验室(金章东)，西安工程学院资源系(李英) |
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| 摘 要： | 矿石的中稀土亏损与热水沉积岩类中稀土富集恰成互补，说明两者是同一热水系统演化过程中不同阶段的产物。南带矿石铅具混合铅特征，其两种不同时期正常铅年龄正与北带基底形成年龄和成矿时代相对应，反映成矿物质来源于下伏沉积柱和古老基底。
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| 关 键 词： | 热水沉积 中稀土 混合铅 地球化学 |
| 修稿时间： | 19980112 |
GEOCHEMICAL
CHARACTERISTICS OF RARE EARTH
ELEMENTS AND LEAD ISOTOPES OF THE SEDIMENTARY
-HYDROTHERMAL TYPE COPPER-POLYMETALLIC ORE
DEPOSITS IN LANGSHAN REGION, INNER MONGOLIA |
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| Jin Zhangdong.GEOCHEMICAL
CHARACTERISTICS OF RARE EARTH
ELEMENTS AND LEAD ISOTOPES OF THE SEDIMENTARY
-HYDROTHERMAL TYPE COPPER-POLYMETALLIC ORE
DEPOSITS IN LANGSHAN REGION, INNER MONGOLIA[J].Journal of Earth Sciences and Environment,1998,20(3):95. |
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| Authors: | Jin Zhangdong |
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| Institution: | Jin Zhangdong;
( National key Labratory of Minerogenesis, Nanjing Univeristy, Nannjing |
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| Abstract: | There are three superlarge copper polymetallic ore deposits in Langshan metallogenic region which are typical of sedimentary hydrothermal genesis. It is indicated that ores and sedimentary hydro thermal rocks are products of different stages in the course of evolution of same hydrothermal system due to middle REE mutual compensation between loss of ores and enrichment of sedimentary hydrothermal rocks. The lead isotopic composition of ores in the southern zone is characterized by mixed lead. The two stage mixing model ages are consistant with basement formation age and metallogenic age in the northern zone, respectively. It reflects that the inital metals came from old basement and sedimentary columns below the ore bearing strata. |
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| Keywords: | sedimentary hydrothermal middle REE mixed lead isotope |
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