6Wiedenbeek M, AUe P, Corfu F, et al. Three natural zircon stand- ards for U - Th - Pb, Lu - Hf, trace element and REE analyses [ J]. C, eostandards and Geoanalytical Research, 1995,19 ( 1 ) : 1 - 23.
7Ludwig K R. ISOPLOT 3.00 : A Geochronological Toolkit for Mi- crosoft Excel[ M]. Berkeley Geochronology Center Special Publica- tion,2003 : 1 - 70.
8Belousova E A, Griffin W L, O' Reilly S Y, et al. Igneous Zircon : Trace clement composition as an indicator of source rock type[ J]. C ontrib. Mineral. Petrol,2002,143 (5) :602 - 622.
9Hoskin P W O. Rare earth element chemistry of zircon and its use as a provenance indicator [ J ]. Geology, 2001,28 ( 7 ) : 627 - 630.
