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| Keywords | |
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aluminous A-type granite |
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Late Triassic |
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post-collision |
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eastern Heilongjiang |
| Authors | |
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ZHENG Quan-Bo-1 |
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2 |
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WANG Yan-3 |
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ZHANG Guang-Yu-3 |
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JIN Zhe-Yan-2 |
| PubMed | |
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Article by Zheng, Q. B. 1 |
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Article by 2 |
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Article by Wang, Y. 3 |
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Article by Zhang, G. Y. 3 |
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Article by Jin, Z. Y. 2 |
Confirmation of Late Triassic A-type granite and their geochemical constraints on structural setting in eastern Heilongjiang
ZHENG Quan-Bo-1, 2, WANG Yan-3, ZHANG Guang-Yu-3, JIN Zhe-Yan-2
1. College of Earth Sciences��Jilin University��Changchun 130061��China; 2. Qiqihar Branch of Research Institute of Regional Geological Survey of Heilongjiang��Harbin 150036��China; 3. Shenyang Geological Survey Center��Shenyang 110034��China
The study of petrology and element geochemistry indicated that there were aluminous A-type granites during Late Triassic in the Wuying --Tangwanghe area of eastern Heilongjiang Province�� The granites are composed of syenogranite-alkaline feldspar granites and alkaline granites��equivalent to the late-collision extension proposed by Liegeois��indicating the ending of orogenic event and the beginning of new interaplate environment�� The whole rock Rb --Sr isochronal age shows the granites formed in Late Triassic��representing the post-orogenic extension of Jiamusi plate and Songnen --Zhangguangcai plate along with Jiayin-Mudanjiang suture zone during Late Triassic�� which indicated the ending of the evolvement of Paleo-Asia Ocean structural zone��and the begining of eastern Heilongjiang into the interaplate evolution of littoral-Pacific structural zone��