��ȡ���ɶ�͹�𱱶�͹����Ͷ��´��� 6 ����о��Ʒ�������׻�ʯ�ѱ侶�� (AFT) ���Բ��������ѱ侶��������ѡ������ 2 ����Ʒ��Լ�������½�����ʷģ�⡣����������ɶ�͹�𱱶������������˾�� 50 Ma ± �׵��������ĩ����� 24 Ma ± �Ķ�Ӫ�������ĩ�� 2 �ι���¡����ͨ�����ɶ������ݶ������ij����ṹ�Ϳذ����ѶԱȿ�֪���ɶ�������һϵ�� NE ��¡��������Ƶķ������ơ���ϲ�������������챳�����ƶ��ɶ��������ɶ�͹����γ��ǹŽ��͵���Ȼ�������չ�����ڿ׵��������ĩ�Ĺ�����Ӧ����ʽΪ�������ʵ�����Ͽ�; ���ɶ�͹��ĵڶ���̧�����ܶ�Ӫ�������ĩ�����������Թ���̧���˶�Ӱ��Ľ����

The apatite fission track test of six core samples collected from uplift zone and steep slope zone of the northern Liaodong Uplift is performed�� The characteristics of fission track and two typical samples' thermal his- torical simulation under the constraint conditions indicate that the northern Liaodong Uplift has two uplifting stages including the end of Kongdian stage (50 Ma ± ) and the end of Dongying stage (24 Ma ± ) in the Cenozoic�� The comparison about the sedimentary structures and the main faults controlling the evolution of sags between the eastern and the western depressions reveals that the developmental mechanism of a series of NE trending uplifts in Liaodong Bay Depression is tremendously similar for each other�� Combined with the regional tectonic background of the Bohai Bay Basin��the formation of the Liaodong Uplifts in Liaodong Bay Depression can be considered as a tectonic re- sponse at the end of Kongdian stage in the form of tilted fault blocks with the property of detachment in Liaodong Bay because of the extensional regime caused by the Paleogene geo- thermal activity in mantle�� And the second up- lifting of the Liaodong Uplift is actually triggered by regional tectonic uplifting movement of the Bohai Bay Basin at the end of the Dongying stage��