���ɹ��в��������������б�����������ù������������ľ�׺ӷ�ϴ���ʹ����������ز㲿�־����˶����������ø��죬���������������ز�δ���ܶ������ʡ��˶������ʴ��������������ʵ����Һ����ʷ�ɰ�ҹ����û�����ǿ�ҡ��������ʴ��ڲ����α���ǿ�ȼ������ȣ������ʯӢϸ�����룬�еIJ�λ���α��ʳ̶ȸߣ��γɶ���ĸ����Ƭ�ң������˺���ĸ+ ����ĸ+ ����ʯ+ б��ʯ+ ʯӢ�ȱ��ʿ�����ϣ����к���ĸ��ѧ���ΪFe2 + ( 1. 38% �� 2. 63%) ��Mg2 + ( 1. 93% �� 2. 47%) ��K + ( 0. 96% �� 1. 38%) ; ����ĸΪSi4 + ( 6. 13% �� 6. 78%) ��Al�ۢ��� ( 1. 22% �� 1. 87%) ��K + ( 0. 93% �� 1. 46%) �����ݶ���ĸ�����¶ȼƹ���Ķ�����������PT ����Ϊ0. 3 GPa��480�棬�еIJ�λֻ�д��Ա��Σ�û���������ʿ�����֣�ֻ�б���û�б��ʡ��䶯�����������о�Ϊ������ؼ���Χ�Ϲ�����������Դ�����ṩ�˵������ݡ�

Linxi area in the middle of Inner Mongolia developed north-east trend tectonic belt near the Siramulen River suture��leading to dynamic metamorphism of partial Linxi Formation statra��and outside the belt was not subjected to dynamic metamorphism�� In the dynamic metamorphic belt developed cleavage��and in the metamorphic mudstone and in the muddy siltstone occurred intense tectonic replacement�� Intensity of deformation and metamorphism in the metamorphic belt is uneven with quartz veinlets penetrated�� Some parts with strong deformation and metamorphism formed two-mica schist��and its metamorphic mineral assemblages is composed of Bt + Ms + Chl + Pl + Q��in which biotite is chemically composed of Fe2 + ( 1. 38% �� 2. 63%) ��Mg2 + ( 1. 93% �� 2. 47%) and K+ ( 0. 96% ��1. 38%) ; muscovite consists of Si4 + ( 6. 13% �� 6. 78%) ��Al�ۢ��� ( 1. 22% �� 1. 87%) and K+ ( 0. 93% ��1. 46%) �� According to the estimation of the two-mica geothermometer��the PT condition of dynamic metamorphism are 0. 3 GPa and 480 �森 Some parts are only in brittle deformation��with no new metamorphic minerals occurced;and are only in deformation withnot metamorphism�� The study of dynamic metamorphism provided the geological basis for the assessment of the Upper Paleozoic oil and gas resources in the Songliao Basin and its peripheral��