论文部分内容阅读
自五十年代以来,由于离子交换技术和质谱同位素稀释法的应用,以及等时线等方法理论的日臻完善,使铷-锶法得到了迅速的发展。至今,已成为测定同位素地质年龄的三种主要方法之一。目前,可用于测定大多数岩浆岩、变质岩、某些沉积岩、火山岩的矿物和全岩的同位素地质年龄,以及陨石和月岩、月壤形成年代。特别是利用铷-锶等时线法测定岩浆侵入作用和变质作用的时代较之其它方法更有独特之处。六十年代以来,应用锶
Since the 1950s, due to the application of ion exchange technology and mass spectrometry isotope dilution method, as well as the theory of isochronism and other methods, the rubidium-strontium method has been rapidly developed. So far, it has become one of the three main methods of determining isotopic geologic age. At present, it can be used to determine the isotopic geological ages of most magmatic rocks, metamorphic rocks, some sedimentary rocks, volcanic rocks and whole rocks, as well as meteorites, lunar rocks and lunar formations. In particular, the use of rubidium - strontium isotope line method to determine magmatic intrusion and metamorphism of the era than other methods more unique. Since the sixties, the application of strontium