吉林延边地区浅成热液型金(铜)矿床稳定同位素组成特征  

The constitutional characteristics of stable isotopes of hypabyssal hydrothermal gold(copper) deposit in Yanbian Prefecture

作　　者：孙超[1] 

机构地区：[1]吉林有色地质勘查局研究所

出　　处：《黄金》1997年第1期8-13,共6页Gold

摘　　要：延边地区浅成热液型金（铜）矿床的形成与中生代构造和火山－次火山岩浆活动有关，属滨太平洋成矿带的一部分。在硫同位素组成上具深源岩浆源硫特征。在氢氧同位素组成上显示出成矿流体为岩浆水和大气降水的混合，并且随矿床形成深度由深到浅，成矿流体由岩浆水为主变成以大气降水为主。在碳同位素组成上具深源碳特征。矿床中硫、氧同位素随矿床形成深度由深到浅，大气降水活动增强。The formation of hypabyssal hydrothermal gold(copper)deposit in Yanbian Prefecture has relation with mesozoic structure and volcanic secondary volcanic magmatic activity.These deposits belong to a part of mineralized zone bordered by Pacific Ocean.The composition of sulfur isotope has the characteristics of the sulfur of deep seated magma source.The composition of oxyhydrogen isotop shows that the mineralizing fluid is the mixture of magmatic water and atmospheric sedimentation,it goes from deep to shallow and its main component goes from magmatic water to atmospheric sedimentation along with the deepening of the deposit.The composition of carbon isotope has the characteristics of carbon of deep seated source.The isotopes of sulfur and oxygen in deposit proceed from deep to shallow,the activities of atmospheric sedimentation proceed from weak to strong and the exchange of sulfur and oxygen isotopes is stronger and stronger along with the deepening of deposit.

关 键 词：浅成热液型 稳定同位素 金矿 矿床 

分 类 号：P618.51[天文地球—矿床学]