Fig. 13 Ce/Nb-Th/Nb diagram for Carboniferouss volcanic rocks from Wulungu-Luliang area (after Song et al. 2004). DMM depleted mantle, SDC recycled subduction-derived component, S.S subducting sediments in arcs, RSC...
The Carboniferous volcanic rocks in the Wulungu-Luliang area are mainly andesites of medium- to high-K calc-alkalic series. Volcanic rock samples have relatively high alkali(Na2O + K2 O = 4.7 % to 6.8 %) and low Ti O2...
The origin of anorthosite and associated igneous gabbronorite and ferrodiorite was investigated through detailed study of a typical massif-type anorthosite complex from Gruber, Central Dronning Maud Land, East Antarc-...