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| PubMed | |
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Article by Chen, X. S. 1 |
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Article by Nie, X. T. 1 |
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Article by Sun, J. G. 1 |
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Article by Wang, Q. H. 2 |
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Article by Guo, J. 1 |
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Article by Zhao, Y. J. 1 |
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Article by Zhang, P. 1 |
Ӣ������Һ������Ź�����ҽ�����������������������������ڵ��ʹ��Լ��д��С������ڳ�¶�Ļ����������ʯ��SHRIMP U--Pb ����������: 16 ���������ʯ��г������ֵ�ɻ���Ϊ4 �飬�ֱ�Ϊ849. 7 �� 897. 0 Ma��755. 6 ± 19. 2 Ma��486 �� 514. 0 Ma ��419 �� 451 Ma������ʯ����������ص��ʲ�������������Ϊ���������ҽ����÷�������ɽ�ڻ���ﶫ��½����ɽ��ĵؿ���չ������(432 Ma); ��������Ԫ�Ŵ�������������ڼ�ľ˹�ؿ��һ���ֻ�ؿ��ݻ����ľ˹�ؿ顢������ɵؿ鴦����ͬ�ĵ��ʻ����С�
Yingchengzi hydrothermal gold deposit is located in the ductile-brittle shear zone of Early Paleozoic granite body from the east of Zhangguangcailing magma tectonic belt. The zircon SHRIMP U-Pb dating of diabase porphyrite cropout in the mine field indicates that the concordant ages of 16 single-grain zircons can be divided into four groups��including 849. 7 �� 897. 0 Ma��755. 6 ± 19. 2 Ma��486 �� 514. 0 Ma and 419 �� 451 Ma. Combining with zircon characteristics and related geological dating data��the authors preliminarily confirm that the magmatism of diabase porphyrite occurred in continental post orogenic extensional setting (432 Ma) of Mashan or Caledonian periods. This area belongs to a part of Jiamusi Massif in Late Proterozoic and Early Paleozoic��or its crustal evolution was in the same environment as Jiamusi and Ergun massifs.