Geochemistry of Megacrysts in Cenozoic Basalts of Eastern China
强烈热液交代金矿石Rb—Sr等时线意义讨论

Results of major ,REE and trace elements and Sr_Nd isotopes of amphibole and clinopyroxene megacrysts from Nushan,Hannuoba and Puning have been given.There are three types of CPX megacrysts in research areas: Al_augite,diopside and Fe_Na diopside.Hastingsite megacrysts from Puning are very rare in the world .CPX and amphibole megacrysts are crystallizic products of basaltic magma at mantle pressure.All of them are xenocrysts.Megacrysts represent cumulates of flow crystallization by basaltic magma .They have no genetic relatins with green xenoliths and probably represent the cognate with some of the black xenoliths.