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| Keywords | |
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grabbro |
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zircon U--Pb age |
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Da'anhe gold deposit |
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Heilongjiang Province |
| Authors | |
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TANG Chen-1 |
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CHAI Peng-2 |
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SUN Jing-Gui-2 |
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WANG Qing-Hai-3 |
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CHEN Xing-Shi-1 |
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LI Yi-Xin-2 |
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YANG Fan-2 |
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LIU Yong-Sheng-4 |
| PubMed | |
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Article by Tang, C. 1 |
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Article by Chai, P. 2 |
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Article by Sun, J. G. 2 |
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Article by Wang, Q. H. 3 |
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Article by Chen, X. S. 1 |
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Article by Li, Y. X. 2 |
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Article by Yang, F. 2 |
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Article by Liu, Y. S. 4 |
SHRIMP U--Pb zircon age of gabbro in Da'anhe gold deposit and its geological implications of Yichun��Heilongjiang Province
TANG Chen-1, CHAI Peng-2, SUN Jing-Gui-2, WANG Qing-Hai-3, CHEN Xing-Shi-1, LI Yi-Xin-2, YANG Fan-2, LIU Yong-Sheng-4
1�� Heilongjiang Institute of Geological Survey��Harbin 150036��China; 2�� College of Earth Sciences��Jilin University��Changchun 130061��China; 3�� International Centre for Geoscience Research and Education in Northeast Asia��Jilin University��Changchun 130026��China; 4�� State Key Laboratory of Geological Processes and Mineral Resources��China University of Geosciences��Wuhan 430074��China
The systematic chronological research of the gabbro associated with the mineralization of Da'anhe gold deposit in Yichun of Heilongjiang��and the CL images of zircon and Th /U ratio characteristics showed that: the zircon U--Pb dating of gabbro can be divided into 4 groups: 811 �� 812 Ma��480 �� 502 Ma��259 Ma and 210 �� 175 Ma��respectively�� The 210 �� 182 Ma ( mean 203. 4 ± 2. 5 Ma) represents the forming time of gabbro and the magma experienced 28 Ma from the source to crystallization�� The other three groups belong to captured detrital zircons�� which revealed this region experienced crustal growth during Late Proterozoic��Middle Cambrian and Late Permian��Mineralization occurred in the process of rock emplacement or the extension period in the middle Early Jurassic ( mean 189 ± 3 Ma) from the perspective of magma evolution and of skarnization��