Zircon SHRIMP ages of the Aolaoshan granite on the south margin of the Qilian Mts. Range from 445?15.3 to 496?7.6 Ma (averaging 473 Ma), belonging to the Early
The Louzidian metamorphic core complex (LMCC) in southern Chifeng is located on the northern margin of the North China craton. Structural analyses of the LMCC a