Abstract:

By researching on the characteristics of trance elements and REE of granite in Ningchanhe area of northern Qilian orogenic zone,we find that granite of Ningchanhe area enrich LREE and REE partition curve is right type,it belongs to the granite formed by different degrees of partial melting of crust.The standardization distribution patterns of trace elements show that incompatible elements（K,Rb,Ba,Th） enrichment,medium incompatible elements（Ce,Nb） selective enrichment,while compatible elements（Ta,Yb） assuming a depletion trend.Besides,the tectonic setting in which such granite characteristics occurs may include the feature of volcanic arc granite reflected by the Qingyang sequence and the orogenic one by every unit of the Ningchanhe sequence.

Key words: Geochemical Characteristics, Granite, Ningchanhe area