���ľ��ر�����ɽ��������ɽ������ɽΧ�ޣ���������ط������ܱ�ɽ��¡���Ŀ��ơ�������������������ڹ�����ӵĵ������γ���NWW ��NEE ��������׶�����ϵ���������������Է��������ز㡣Ϊ�о��������������˶�ģʽ���ڴ����ܱ�ɽ�弰���ѻ֮��Ĺ�ϵ�����ڸ������ɵ�����������½���ɹ����������еĶ��Ѽ�����������з�����ȷ��������������������Ѽ�����3 ��ʱ�ڣ��ֱ���Ʋ�ͬ��������ķ���: ���ڻ�Ķϲ������������1 �ķ���( TR �� T3 �� 53. 5 �� 31. 5 Ma) �����ڻ�ϲ������������2 �ķ���( T'2 �� �ֽ�14. 9 �� 0 Ma) ������������һֱ��Ķϲ�Ҳ������һ�������������ڹ����ݻ����巽��������ɽ�Ͱ�����ɽǰ������������չ����ͬ���ڹ���չ������

Qaidam Basin is confined by Kunlun��Altyn Tagh and Qilian mountains��and the Cenozoic basin development is controlled by the uplift of surrounding mountains�� Weastern Qaidam Basin is the most complex area in the basin��where there are two fault systems in NWW and NEE trends and developed growth strata in seismicprofiles�� To study the relationship between the tectonic model and stages of western Qaidam Basin with the activity of surrounding mountains and faults��the authors analyze the faults and growth sequences based on the new interpretation results of main seismic profiles�� It is confirmed that the Cenozoic active faults concentrated in three periods and controlled the development of different growth sequences in western Qaidam Basin: the early active faults controlled the development of the growth sequence 1 ( TR �� T3 ��53. 5 �� 31. 5 Ma) ��the later active faults controlled the growth sequence 2 ( T'2 �� present��14. 9 �� 0 Ma) ��and the faults have been active since Cenozoic controlled another set of growth sequence�� The main regional direction of tectonic evolution expanded from the Kunlun and Altyn Tagh mountains to the innter basin and regulated the direction of structure distribution��