������ 1�� 5 ��������ʵ���Ļ����ϣ������������������Ĺ����μ������˽�Ϊ��ϸ���о����������: �����������ɻ����������㣬�ֱ����˿��ڹ���㡢����ﶫ�ڹ���㡢�����ڹ���㡢��ɽ�ڹ�����ϲɽ�ڹ���㡣���ݹ����μ�����״���졢��״���켰��������Լ�������ʾ�Ķ���ѧ��־���Ը������ľֲ�Ӧ���������˻ָ������У��˿�������Ϊ NE—SW ��ѹ (����) �������ã�����Ϊ�� SN ��ѹ; ����ﶫ��Ӧ�����÷�ʽӦΪ NW—SE ��ѹΪ��; ��������ҪΪ�� SN ��ѹ����; ��ɽ��ͬ��Ϊ�� SN ��ѹ����; ��ϲɽ�������Ϊ���ģ�IJ����������˶���

Based on the 1�� 50 000 regional geological survey��the authors studied the structural features of Taerqi area�� The results showed that Taerqi area can be divided into five structural layers��which are Xingkai struc- tural layer�� Early Caledonian structural layer�� Hercynian structural layer�� Yanshanian structural layer and Himalay- an structural layer��respectively�� According to the planar structure��linear structure��combination feature and their dynamics symbols��the authors restored the local stress fields of each structural layer�� The early Xingkai period was controlled by the NE - - SW extrusion (left) shearing action��and late by nearly NS extrusion; the Early Caledonian period was given priority to NW - -SE extrusion; Hercynian mainly by nearly NS extrusion; Yanshanian was also controlled by nearly NS extrusion; Himalayan shows the massive difference lifting movement��