State;
Key;
laboratory;
of;
Geological;
Processes;
and;
Mineral;
Resources,;
China;
University;
of;
Geoscienees,;
Beijing;
100083,;
China;
Laboratory;
of;
Crust;
and;
Orogen;
Evolution,;
Peking;
University,;
Beijing;
100871,;
China;
Institute;
of;
Geochemistry,;
Chinese;
Academy;
of;
Sciences,;
Guiyang;
550002,;
China;
Department;
of;
Geology,;
Northwest;
University,;
Xi';
an;
710069,;
China;