摘要
为了适应地质找矿工作的需要,地质定年方法的研究应用得到了快速发展,如锆石U-Pb法、ArAr法等,但这些定年方法大多用于成岩年龄的测定,对于找矿过程中极为关注的成矿年龄的测定作用有限。Re-Os体系的研究一直是研究热点,而且是现今唯一的较为可靠的直接测定成矿年龄的方法。Re-Os定年法是基于187Os主要来源于187Re的衰变特性,通过测定矿物尤其是辉钼矿中187Os的比值进行年龄的确定。对Re-Os法定年进行系统的总结,概述该方法的研究进展、定年原理、采样要求,并对其在实际地质工作中的各种运用举例说明。
In order to meet the needs of geological prospecting work has now developed a number of dating methods, such as zircon U-Pb method, Ar-Ar method, etc. However, these dating methods are mostly used for age determination of diagenesis for the prospecting process mineralization age of great concern to the determination of limited effect. Re-Os system has been a hot topic, what＇ s more, it＇ s the only more reliable method of direct determination of ore-forming age today. Re-Os dating method is based on the 1870S mainly from lS7Re decay properties, in particular, by measuring the mineral molybdenite in the ＇S70s ratio for the age determination. This paper aims to mandatory annual Re-Os systematic summary of the methods of research, dating principle, an overview of sampling requirements, and carries out its practical application of geological work in a variety of examples.
出处
《资源环境与工程》
2013年第5期681-687,共7页
Resources Environment & Engineering
