supported by the National Natural Science Foundation of China(Grant Nos.40372038 and 40325006);National Oil Gas Special Project(Grant No.XQ-2004-07).
Large-scale granitic plutons are exposed in the Ergun block in the northern part of the Da Hinggan Range, but their emplacement age and petrogenesis remain un-known. Of these plutons, the Tahe pluton is composed mainl...