| 山门银金矿铅同位素地球化学研究 |
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| 引用本文：咸嘉泉,周燕,张延洁,王铁夫.2004.山门银金矿铅同位素地球化学研究[J].地球学报,25(2):137-140. |
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| 基金项目:吉林省科委资助项目(吉科033号) |
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| 中文摘要:在研究中将矿石铅、岩石铅同位素数据投影于Zartman铅构造模式图中。矿石铅数据点都位于造山带和地幔铅演化线之间，大洋火山岩范围内，更靠近地幔铅演化曲线，说明矿石铅主要来自地幔；岩石铅数据点都落在造山带和上地壳演化线之间，说明岩石铅来自地壳物质重熔或同熔产生的花岗岩类。从而认为山门矿床成矿物质主要来自赋矿地层。矿区印支期或印支燕山期花岗岩是该区老地层重熔形成。该花岗岩的热液活动对山门矿床的最终形成具有重要作用。 |
| 中文关键词:铅同位素 银金矿 岩浆岩 |
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| A Geochemistry Study of the Lead Isotope in the Shanmen Electrum Deposit |
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| Abstract:This paper deals mainly with the genesis of the Shanmen electrum deposit based on lead isotope ratios of ores,granites and strata.The data of rock lead and ore lead were projected on te map of Zartman′s lead model.The data of ore lead are all located between the line of the mantle and that of the fold belt or,more exactly,near the mantle line,suggesting the derivation of ore lead from the mantle.There are data of rock lead between the fold belt line and the upper lithosphere line,implying the derivation of rock lead from the granite formed by the remelting of the oldest crust.It is thus known that most ore-formng substances were derived from the ore-hosting strata in the Shanmen deposit.The granites of Indo-China movement or Indo-China-Yanshanian movement were produced by the remelting of the oldest strata in this region.The hydrothermal processes of the granites are very important in the formation of the Shanmen deposit. |
| keywords:lead isotope Electrum granite |
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