Genesis of A-type Granites in the East Junggar, Xinjiang and Growth of Continental Crust——Evidence from Geochronological and Sr-Nd Isotopic Compositions

摘要

The magma source,petrogenesis,tectonic setting and its geochronology of the Late Paleozoic A-type granites,which widely exposed in Zhaheba area,East Junggar,have not been well constrained so far(Fig.1 a,b).A better understanding of above issues will help us to reveal the magmatic processes and the continental growth of Central Asia(Xiao et al.,2009).