厘定矿床的形成时代对于正确认识矿床的成因、了解成矿机制和控矿因素以及掌握成矿规律并指导进一步找矿勘查具有重要意义.与热液有关的金矿床由于成矿热液来源的复杂性以及多期性,确定其矿化发生的年代一直是矿床学研究中的难点.对与热液金矿成矿同时形成的单矿物甚至载金矿物进行同位素直接定年,能够得到与热液成矿有关的金矿床的形成年代.对于单个矿床而言,应该根据相应的成岩成矿地质背景选择合适的定年矿物以及放射性同位素定年体系进行成矿年代的测定,得到具有地质意义的成矿年龄.在前人研究的基础上,对当前确定与热液成矿有关的金矿床成矿时代中应用最广泛有效的几种定年方法技术进行简要评述.
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