摘要
矿床成矿时代的界定对于矿床成因的认识、成矿事件时间维的标定及找矿方向的确定具有十分重要的理论意义和实际意义。MVT铅锌矿床的精确定年更是建立可靠的成矿模式所必须解决的问题。本文评述了几种常用的MVT铅锌矿床的定年方法 ,如古地磁法、4 0 Ar 3 9Ar法、U Pb法、Rb Sr法、Sm Nd法和裂变径迹法 ;阐明了精确定年在研究MVT矿床成因中的作用。随着实验技术和测试手段的不断发展和提高 ,4 0 Ar 3 9Ar法、Rb Sr法和Sm
Metallogenic age restriction of ore deposit is of great significance both in theory and in practice, which is helpful to understanding the origin of ore deposit and demarcating of temporal dimension on mineralization event to the exploration of deposits.Precision dating is critical for establishing a reliable metallogenic model of MVT Pb-Zn deposits.In this paper,we review some major dating methods that are after used,such as paleomagnetic 40Ar- 39Ar, U-Pb, Rb-Sr, Sm-Nd, fission track methods,and illuminate the role of precision dating in investigating the genesis of MVT deposit.Following the development of experimentation and testing technique, methods of 40Ar- 39Ar, Rb-Sr, Sm-Nd applied in precision dating of MVT Pb-Zn deposits.
出处
《世界地质》
CAS
CSCD
2003年第1期57-63,共7页
World Geology
基金
国家自然科学基金 ( 49872 0 3 8)
中国科学院"百人计划"项目"分散元素成矿机制"资助
