柴北缘夏日达乌铌钽矿区花岗岩地球化学特征及地质意义

魏生云,王建国,郭学忠,邢佳

Geochemical Characteristics and Geological Significance of Granite in Xiaridawu Niobium-Tantalum Mining Area，Northern Margin of Qaidam Basin

Shengyun WEI,Jianguo WANG,Xuezhong GUO,Jia XING

图17 花岗岩Hf-Rb-Ta判别图解（底图据Harris et al.，1986）

Fig.17 Hf-Rb-Ta discrimination diagram of granite（base map after Harris et al.，1986）