The subdivision of the Namjagbarwa Group Complex within the eastern Himalayan syntaxis,Xizang

The Namjagbarwa Group Complex within the Eastern Himalayan syntaxis,Xizang may be sub-divided,on the basis of regional geological mapping in combination with rock types,metamorphic degrees and deformational patterns,into three mappable units:Zhibai and Paixiang Formation Complexes,Doxongla migmatites,all of which are bounded by the structural contacts and surrounded by the Indus-Yarlung Zangbo suture zone. The protolith ages for the Zhibai Formation Complex should be dated between 1312 Ma and 552 Ma.