矿床地质2013，Vol.32Issue(3)：614-624,11.
江西省兴源冲铜矿床同位素地球化学特征及成矿机制探讨
Carbon, oxygen and sulfur isotopic geochemistry and metallogenic mechanism of Xingyuanchong copper deposit in Jiangxi Province
刘婷 1刘成东 2严兆彬 1陈益平 1吴旭铃 1凡秀君3
作者信息
- 1. 东华理工大学核资源与环境省部共建国家重点实验室培育基地,放射性地质与勘探技术国防重点学科实验室,江西南昌330013
- 2. 安徽工业经济职业技术学院,安徽合肥230051
- 3. 江西省地质调查研究院,江西南昌330030
- 折叠
摘要
Abstract
The Xingyuanchong copper deposit of Huangmao area is located in the west segment of the South Jiuling large copper polymetallic ore concentration area.In combination with the metallogenic characteristics of the ore deposit,the authors mainly studied stable isotopes of the ores to probe into the sources of metallogenic materials and metallogenic mechanism of the deposit.δ13 CVPDB values of carbonates in this area vary in the range of -5.4‰～1.9‰,0.6‰ on average,whereas δ18OsMow values range from 9.0‰ to 13.8‰,10.9‰ on average,indicating that carbonates were mainly marine carbonates.The δ18O-δ13C diagram shows that carbon in the region probably came from the deep earth,and experienced metamorphism at high temperatures and alteration at low temperatures.Except two higher values of δ34S,most δ34S values in this deposit vary in the range of 1.0‰ ～6.2‰ ; in comparison with other similar deposits,sulfur of this deposit is characterized by submarine exhalation sedimentation and hydrothermal superimposition.In combination with isotopic data and geological setting,it is proposed that the ore-forming processes of the Xingyuanchong copper deposit could be divided into two stages.At the first stage,submarine volcanic sediments or protore layers were formed in Mesoproterozoic.At the second stage,the pre-existing protores were altered by the hydrothermal fluids and dynamic metamorphism mainly derived from Jinning orogenic period in Late Proterozoic.关键词
地球化学/稳定同位素/成矿物质来源/成矿机制/海底火山沉积/兴源冲Key words
geochemistry/ stable isotope/ sources of metallogenic materials/ metallogenic mechanism/ submarine volcanic sediment/ Xingyuanchong分类
天文与地球科学引用本文复制引用
刘婷,刘成东,严兆彬,陈益平,吴旭铃,凡秀君..江西省兴源冲铜矿床同位素地球化学特征及成矿机制探讨[J].矿床地质,2013,32(3):614-624,11.
