在全岩Rb-Sr同位素分析过程中,不仅可以通过等时线处理获得岩体形成的年龄,而且更为重要的是,在年龄计算过程中得到的初始~(87)Sr/~(86)Sr比值乃是一个十分重要的地球化学参数,它可以有效地应用于确定岩体成岩物质来源,并结合其它的地质与地球化学研究结果,还可进一步阐明岩体的成 In the Rb-Sr isotopic analysis of whole rocks, not only the age of formation of rock mass can be obtained by isochronism, but more importantly, the initial ~ (87) Sr / ~ (86) The Sr ratio is a very important geochemical parameter, which can be effectively applied to determine the source of diagenetic materials of rock mass. Combined with other geological and geochemical findings, the ratio of Sr to