| 吉林夹皮沟金矿床主成矿时代的确定及找矿方向 |
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| 引用本文：孙忠实,冯亚民.1997.吉林夹皮沟金矿床主成矿时代的确定及找矿方向[J].地球学报,18(4):367-372. |
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| 基金项目:1993年中国有色金属工业总公司资助 |
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| 中文摘要:夹皮沟金矿床主成矿时代一直悬而未决，矿区及外围找矿始终处于排徊阶段。通过构造、岩浆岩、脉岩和标型矿物等综合地质分析，结合４４条脉岩Ｋ Ａｒ年龄的统计和含金石英脉石英流体包裹体Ｒｂ Ｓｒ同位素测试等表明，夹皮沟金矿带主成矿时代为燕山期。燕山期正是太平洋板块向欧亚大陆俯冲，造成华北地台东部强烈岩浆活动、深大断裂和环太平洋成矿带形成的最佳期。找矿靶区应重点选定在夹皮沟 大砬子深大断裂两侧中生代构造系统和脉岩体附近。 |
| 中文关键词:金矿带 成矿时代 夹皮沟 |
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| Main Minerogenetic Epoch, Determine and Exploratory Direction of Jiapigou Gold Deposit, Jilin |
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| Abstract:Main minerogenetic epoch in Jiapigou gold deposit had not been determined before,which results in ore area and field exploratory to have been in wavering stage, and is now determined by the authors as Yanshan Epoch by synthesizing geological analysis of tectonics, magmatic rocks, vein rocks and typomorphic minerals, combining K_Ar statistics in 44 vein rock, determining Rb_Sr isotopic epoch in quartz aerohydrons, gold_quartz vein. Yanshan Epoch is the best epoch of subduction of Pacific plate to Eurasian continental crust, leading to intense magmatic activity in the East of North China platform and formation of deep fault and circum_Pacific minerogenetic belt. Metallogenic prognosis province should be mainly selected in the Mesozoic tectonic systems and nearby vein rocks by both sides of Jiapigou_Dalazi deep fault. |
| keywords:gold deposit minerogenetic epoch exploratory direction |
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