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Global Geology 2012, 15(1) 19-25 DOI:
ISSN: 1673-9736 CN: 22-1371/P |
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Discussion on Middle Jurassic metallogenic mechanism of Au-Mo polymetallic hydrothermal deposits in eastern Jilin |
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LI Bile and SHEN Xin |
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College of Earth Sciences��Jilin University��Changchun 130061��China |
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Abstract��
In the Middle Jurassic��a large-scale tectonic-magmatic activities and hydrothermal mineralization occurred in the eastern Jilin province�� The deposit types consist of the orogenic gold deposit��porphyry molybdenum deposit and skarn gold deposit��etc. ��which constitute regional hydrothermal metallogenic series�� The magmatic bodies related to mineralization belong to calc-alkaline series��which are characterized by active continental margins�� The above-mentioned different types of deposits formed in a uniform tectonic setting��which resulted from the combined processes between the subduction of Pacific plate under the Eurasia plate and the persistent post-collisional convergent forces between the North China plate and the Siberian plate�� The mineralizations were happening in the deceleration period��after which Paleo-Pacific plate was strongly subducted under the Eurasia continental block��i�� e�� transition period from compression to extension�� |
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Keywords��
Middle Jurassic
orogenic gold deposit
porphyry molybdenum deposit
metallogenic mechanism
eastern Jilin
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Received Revised Online: |
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