Petrology Characteristics of Granites in Yuerya Mine of Hebei
Kang Xiangui Yang Rongyong Chen Kerong Chen Xiaoming
The mineralogical, petrochemical characteristics and geochemical features of Yuerya batholith,Huluyu batholith and Sandaowan batholith in Eastern Hebei Province, are studied. The results show that they are all the partial remelting products of the Archean basement rocks Qianxi group,which is composed of metamorphic basic-intermediate volcano sedimentary rocks (belonging to the lower crust), between the Atype covergence in the plate.So the genetic type is the anatexis of the lower crust.We also point out the granite of this genetic type is important in the NorthChina plate. It mainly presents Ⅰtype characteristics. However with the increase of composition of metasedimentary rock in the formed magma,it also presents some Stype chracteristics.