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目前,应用锶同位素初始比值来探讨岩石成因、成矿机制和其在空间、时间上的规律性,研究地壳发展历史及成岩、成矿物质运移特征,在国内外已越来越受到人们的重视。几年来,我们对贫铷富锶样品,测定其~(87)Sr/~(86)Sr和~(87)Rb/~(86)Sr的现代比值,扣除从各自衰变生成部分所计算的岩石出始~(87)Sr/~(86)Sr比值,就可以用于地质解释。我们先后对七个岩体和地区的岩石,包括不同时代的花岗岩、花岗闪长岩、正长岩,以及酸性火山岩、基性玄武岩中贫
At present, the initial ratio of strontium isotope is used to explore the genesis and mechanism of the rock and its regularity in space and time. The study of the history of the crust and the characteristics of diagenesis and metallogenic material migration have been increasingly accepted by people at home and abroad Pay attention. For several years, we measured the modern ratios of ~ (87) Sr / ~ (86) Sr and ~ (87) Rb / ~ (86) Sr to rubidium-depleted strontium- The starting ~ (87) Sr / ~ (86) Sr ratio can be used for geological interpretation. We have studied the rock mass of seven rock masses and regions, including granite, granodiorite, syenite, and acidic volcanic rocks of different ages,