發(fā)布時間：2018-03-11 16:44

  本文選題：青城子鉛鋅礦　切入點：流體包裹體　出處：《地質(zhì)與勘探》2017年02期 　論文類型：期刊論文

【摘要】：青城子鉛鋅礦地處遼東-吉南裂谷帶西端,是中國東北地區(qū)著名的鉛鋅礦床,其成礦作用復雜。為了深入揭示該礦床的成礦流體特征和成礦物質(zhì)來源,本文在對青城子鉛鋅礦床(喜鵲溝、甸南、本山)地質(zhì)特征研究的基礎(chǔ)上,開展了流體包裹體測溫和激光拉曼成分分析,H、O、C、S、Pb同位素分析,并進行了多元同位素體系的綜合示蹤。青城子鉛鋅礦床發(fā)育富液相包裹體,局部發(fā)育H_2O-CO_2三相包裹體。成礦溫度范圍大,是多階段成礦作用發(fā)展演化的反映(至少兩期成礦),成礦溫度主要在190℃~310℃之間,應屬中溫成礦,成礦流體為中溫低鹽度的水鹽流體。激光拉曼成分特征,成礦流體總體屬于含CH_4的H_2O-CO_2-NaCl體系,屬于還原性流體,具有深源的特征。氫氧同位素結(jié)果顯示,成礦熱液主要來源于巖漿水和大氣降水。硫同位素特征表明,礦體中的硫可能主要來自海水硫酸鹽的還原。碳氧同位素特征表明,成礦物質(zhì)可能起源于地層,后期發(fā)生巖漿熱液改造。鉛同位素結(jié)果表明,礦石中鉛是地層與巖漿巖的混合源鉛。
[Abstract]:Qingchengzi lead-zinc deposit is a famous lead-zinc deposit in northeast China, which is located at the western end of Liaodong-South Jilin rift belt, and its metallogenic process is complicated. In order to reveal the ore-forming fluid characteristics and the source of ore-forming material, Qingchengzi Pb-Zn deposit is a famous Pb-Zn deposit in northeast China. Based on the study of geological characteristics of Qingchengzi lead-zinc deposit (Magiegou, Diannan, Benshan), fluid inclusion temperature measurement and laser Raman composition analysis have been carried out in this paper. Comprehensive tracer of multicomponent isotopic system has been carried out. Liquid rich inclusions are developed in Qingchengzi lead-zinc deposit and H2O-COJ _ 2 three-phase inclusions are locally developed. The metallogenic temperature range is wide. It is a reflection of the development and evolution of multistage metallogeny (at least two stages of mineralization). The ore-forming temperature is mainly between 190 鈩，

本文編號：1599020