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| Keywords | |
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Late Triassic- Early Jurassic granitic complex |
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zircon U- Pb dating |
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magmatic evolution history |
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Jinchang Cu - Au deposit |
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eastern Heilongjiang |
| Authors | |
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HAN Ji-Long |
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WANG Qing-Hai |
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SUN Jing-Gui |
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MEN Lan-Jing |
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CHAI Peng |
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ZHAO Ke-Qiang |
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ERN Liang |
| PubMed | |
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Article by Han, J. L. |
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Article by Wang, Q. H. |
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Article by Sun, J. G. |
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Article by Men, L. J. |
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Article by Chai, P. |
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Article by Zhao, K. Q. |
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Article by Ren, L. |
Zircon U-Pb dating and magmatic evolution history tracing of Late Triassic- Early Jurassic granitic complex in Jinchang Cu- Au deposit area��eastern Heilongjiang
HAN Ji-Long, WANG Qing-Hai, SUN Jing-Gui, MEN Lan-Jing, CHAI Peng, ZHAO Ke-Qiang, REN Liang
1. College of Earth Sciences��Jilin University��Changchun 130061��China; 2. International Center for Geoscience ��esearch and Education in Northeast Asia��Jilin University��Changchun 130026��China; 3. School of Prospecting �� Surveying Engineering��Changchun Institute of Technology��Changchun 130021��China
The Jinchang Cu- Au deposit is located in the eastern edge of Xing- Meng orogenic belt��northern Xingkai- - Yanji tectonic- magmatic belt�� We introduce the zircon CL images��U- Pb dating and tracing of the magma evolutionary history on the granitic complex in Jinchang Cu - Au deposit�� The results show that it records the ther- mal evolution history of Late Triassic- Early Jurassic continuous magmatism well in this area�� The magma evolution has undergone approximately six stages��including of the cooling crystallization of magma chamber��the slow crys- tallization of early stage magma��the fast crystallization during emplacement process of magma��the cooling crystal- lization of main granitic magma��the crystallization of late stage magma- hydrothermal fluid and the crystallization of the remainder magma- hydrothermal fluid�� The whole process appeared relative continuous emplacement of magma�� and lasted for 23 million years at least��