玲珑花岗岩同位素年代学问题讨论

DISCUSSION ON THE ISOTOPIC CHRONOLOGY OF THE LINGLONG GRANITES

摘要:

Abstract:

Many large gold deposits with plenty ore reserves are hosted immediately in the Linglong Granites and, hence, the study of its age is of great interest to clarify the rock-forming process(es) of the Linlong Granites and the related ore-forming process(es). Through the detailed reduction and analysis of 49 isotopic age measurements of different kinds from the Linglong Granites during 1964—1984, it is suggested that the Linglong Granites were formed in the early Yanshan movement of the late Jurassic. The mode...