��Ұ�����ʵ��Ļ����ϣ����ǰ���о��ɹ������ּ�ľ˹¡������Ե��ؼ�߽�����Խ����������������Ϊ�����������������һϵ�е����ϲ���ɣ�����ũ—��¶��ѡ���������ϲ��߽���ѵȣ���巽��������; ������������Բ�( ��) --��( ��) ����Ϊ������������Ƹ�����Ŀռ�չ����������ʽ����Ϲ�ϵ����м�ʯ�ѱ侶����������������ľ˹¡������Ե��ؼ�߽���ѵ��γ�ʱ��Ϊ�������( ��ɽ��) ֮�󡣳�����Ϊ�������ʱ�ڸ�����NW--SE ����չ���ã���ľ˹��Եͳһ����γɣ��������ʱ������NWW--SEE ��ѹ���öԼ�ľ˹¡����Ե��ؼ��Ե���Ѳ�����������

On the basis of field geologic surveying and previous data��we find the boundary faults of Jiamusi Uplift with its surrounding basins extended mainly in the directions of near EW and near NW��in which the faults in near EW direction formed by a series of thrusts nappe��e�� g�� the Xingnong-peide fault��the southern margined fault of the Sanjiang Basin��etc�� Its thrust direction is from the south to the north; the north--west faults are mainly represented by the Boli--yilan fault�� Based on the thrust nappes distribution��structural style��composite relations and detrital zircon fission track dating result analysis��we find that Jiamusi Uplift and surrounding faults formed after the Early Cretaceous ( Dongshan Formation) �� The studied area impacted by the NW--SW extension��formed the comprhensive basins in the Early Cretaceous�� During Late Cretaceous in the studied area��the NWW-SEE compressions thrusted and superimposed on the Jiamusi Uplift and its surrounding faults��