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| PubMed | |
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Article by Xing, D. Q. |
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Article by Liu, Y. J. |
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Article by Tang, Z. X. |
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Article by Li, W. M. |
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Article by He, J. L. |
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Article by Liang, C. Y. |
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Article by Cui, Y. |
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Article by Zhang, L. |
�������λ�ڻ�����鱱�����˰��ؿ鶫Ե���DZ�����չ���Ŀ�������ء��ۺ���������������ϡ��꾮���Ϻ��ش����ϣ�����������Ϲ�����ֲ����������˷�����ͨ���ش����Ϻ͵���- -��������������ͣ�ȷ��������� 12 ���Ǽܶ���λ�úͻ�ڴΣ�����Ϊ����Ϲ�������� “�����һ¡”�Ĺ�����������϶������������ݻ����ɣ���Ϊ��ع����˶���ҪΪ�ĸ��Ρ���һ��: �˰��ؿ������۵ؿ�����غں�—�۽�—������һ������ʯ̿��ĩ������ײƴ�ӣ���ɱ��� NWW— SEE ����ļ�ѹ�������ã��γ� “�����һ¡”�����幹���֡��ڶ���: ������ľ�Ӷ��ѣ���—�ɵؿ�ͻ�������ڶ�����ĩ��ײƴ�ӣ��� NS ��ѹ�γ� EW ������塣������: ������ (٪��) ������̫ƽ����б�壬NE ��ѹŤ�����γ� NE—NNE ����������������ѡ����Ľ�: ������ (110 Ma) �γ� NW ����Զ��ѹ�����Ρ�
The Songliao Basin locates the north of North China Plate�� and the east of Xing'an block�� It is con- sidered as a NE- trending fault broad rift basin�� The authors synthesize the latest regional geological data��drilling data��and gravity and magnetism data to analyze the Upper Paleozoic distribution characteristics of the Songliao Ba- sin�� Based on the interpretation of gravity and magnetic data and seismic- geology section��the authors determine the location and active stages of the 12 skeletal faults��and suggest that the Upper Paleozoic basin is characterized in one uplift sided by two depressions�� Combined with the tectonic revolutionary regulation of Northeast China��the tectonic evolution of Songliao Basin can be divided into four stages as follows�� The first stage demonstrates that�� Songnen block and Xing'an block collided roughly along the Heihe- -Neijiang- -Zhalantun suture at the end of Early Carboniferous��resulting in NWW- -SEE- trending compressional deformation��forming the“one uplift sided by two depressions”tectonic framework�� The second stage shows that Jiamusi- - Mongolia block and North China plate colli- ded along the Xar Moron suture zone in Late Permian��causing formation of the NS- trending extrusion generated WE-trending relief fold�� The third stage represents that the subduction of west Pacific plate beneath the Asian conti- nent in Jurassic��forming the NE- - NEE- trending strick- slip faults�� The fourth stage is the period that the Mesozoic NW- trending brittle fracture deformed at the time around 110 Ma��