��������ͭ��󴲵ش�������ɽ���ı����ˣ��˿�—�ӱ��������ҽ�������������Ըÿ��������������忪չ�ʯ CL ͼ��U- -Pb ������ݻ�ʷʾ�٣�����������Ϻõؼ�¼�˸���������������—��٪�����ҽ��������õ����ݻ�ʷ���ҽ��ݻ����¾����� 6 ���׶�: �ҽ�����ȴ�ᾧ�������ҽ������ᾧ���ҽ���ӿ�����п��ٽᾧ�����廨���ҽ����½ᾧ�������ҽ���Һ�ᾧ�Ͳ����ҽ���Һ�ᾧ���̡������ҽ��ݻ��������پ����� 23Ma����������������ҽ���λ���̡�

The Jinchang Cu- Au deposit is located in the eastern edge of Xing- Meng orogenic belt��northern Xingkai- - Yanji tectonic- magmatic belt�� We introduce the zircon CL images��U- Pb dating and tracing of the magma evolutionary history on the granitic complex in Jinchang Cu - Au deposit�� The results show that it records the ther- mal evolution history of Late Triassic- Early Jurassic continuous magmatism well in this area�� The magma evolution has undergone approximately six stages��including of the cooling crystallization of magma chamber��the slow crys- tallization of early stage magma��the fast crystallization during emplacement process of magma��the cooling crystal- lization of main granitic magma��the crystallization of late stage magma- hydrothermal fluid and the crystallization of the remainder magma- hydrothermal fluid�� The whole process appeared relative continuous emplacement of magma�� and lasted for 23 million years at least��