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多年来,Rb—Sr法一直是研究深成岩的侵入年龄、火成岩的喷发年龄或者变质岩的重结晶年龄的一个很成功的方法。自1956年Cormier首次研究海绿石以来,Rb—Sr法近年来应用于沉积岩及其矿物时,存在着某些偏差,原因可能有三方面: 1)除为某种目的而测定海绿石或分离的粘土矿物以外,几乎都是测定全岩; 2)几乎完全没有矿物学控制; 3)通常不知道或不考虑沉积岩的变质历史。
Over the years, the Rb-Sr method has been a very successful method for studying the age of plutonic invades, the age of igneous rocks or the recrystallization age of metamorphic rocks. There have been some deviations in the Rb-Sr method applied to sedimentary rocks and their minerals for the first time since Cormier first studied the gravel in 1956 for three reasons: 1) except for the determination of glauconite or separation for some purpose Almost all of the determination of the whole rock; 2) almost no mineralogical control; 3) usually do not know or do not consider the metamorphic history of sedimentary rocks.