LA-ICP-MS Allanite U-Th-Pb Geochronology Study on Guangdong Province,Xinfeng REE-Rich Granite

摘要

<正>Allanite is a common accessory mineral,which is an important carrier of LREE,Th,U,Sr and other trace elements in rocks.Th,U can be enriched in allanite lattice in the form of isomorphism,so allanite is a good geochronological tool.In this paper,procedures