摘要
长期以来,由于金属成矿的多期性及易受后期蚀变的干扰,成矿时代的确定成为难题,进而成为成矿机理、矿床勘探等研究的制约因素.本文以黄铁矿和闪锌矿这两种典型的矿石矿物为例,回顾了利用40Ar/39Ar法直接确定成矿时代的研究现状,探讨了其中的问题、可能的解决方法及以后的发展前景,为进一步开展矿石矿物的40Ar/39Ar年代学提供参考.同时对采自辽宁丹东青城子矿中的黄铁矿和闪锌矿样品做了包裹体镜下观察和电子探针的元素分析,以期更好地理解矿石矿物40Ar/39Ar法直接定年的潜力。
Due to multi-episodes and post-depositional hydrothermal alteration of a metallic ore deposit, dating of its metallogenesis is a problem for a long time, and harasses geologists who are interested in investigating metallogenic mechanism and prospecting for mineral deposits. In this paper, we present a review to show the current situation of dating on pyrites and sphalerites, two typical ore minerals, by using 40Ar/39Ar method as a direct way of timing of metallogenesis, and a prospect is viewed finally. In the review, some problems in these researches and possible solutions are discussed. We also present some preliminary results of mineralogical studies of pyrite and sphalerite, trying to understand the occurence of K and Ar within their crystal structures. This can be a guidance in the future for 40Ar/39Ar dating on ore minerals.
出处
《地质科学》
CAS
CSCD
北大核心
2015年第4期1166-1177,共12页
Chinese Journal of Geology(Scientia Geologica Sinica)
基金
国家自然科学基金项目（编号：41221002,41025010）和岩石圈演化国家重点实验室自主研究课题（编号：专1303）资助.
