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地质学报  2005 

辽东庄河金矿同位素地球化学特征及成矿时代

, PP. 671-678

Keywords: 同位素,地球化学,成矿时代,庄河金矿,辽宁

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Abstract:

到目前为止,对辽宁庄河金矿尚没有做过系统的矿床地球化学和同位素年代学的研究。本文在成矿地质条件分析的基础上,对庄河金矿床的氢、氧同位素、硫同位素、铅同位素、碳同位素以及Rb-Sr同位素的组成特征进行了分析研究。氢、氧同位素组成表明成矿流体主要来源于岩浆热液,并与围岩发生了同位素交换;硫同位素和碳同位素组成表明成矿物质主要来源于地壳深部;矿石和花岗斑岩脉具有非常相似的铅同位素组成,暗示该矿床的形成和物质来源与此岩浆活动有密切的成因联系;石英流体包裹体Rb-Sr等时线年龄为143.0±5.8Ma,表明金的成矿期为燕山期。

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