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14 花岗岩La/Sm-La判别图解（底图据Allegre et al.，1978）

Fig.14 La/Sm-La diagram of granite（base map after Allegre et al.，1978）