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2013, 32(2) 244-254 DOI:
ISSN: 1004-5589 CN: 22-1111/P |
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Zircon U--Pb age��geochemical feature and tectonic significance of the granite pluton in northern Hegen Mountain of Inner Mongolia |
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ZHANG Kuo-1, 2, SUN Feng-Yue-1, ZHAO Xiao-Liang-3, GUAN Qin-4, LOU Yun-He-5, LI Cheng-Dong-2, ZHAO Li-Gang-2 |
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1. College of Earth Sciences��Jilin University��Changchun 130061��China; 2. Tianjin Institute of Geology and Mineral Resources��Tianjin 300170��China; 3. CNOOC Energy Development Ltd�� ��Supervision and Technology Branch��Tianjin 300452��China; 4. Shandong Provincial Geo-mineral Engineering Exploration Institution��Jinan 250014��China; 5. Heilongjiang Province Institute of Regional Geology��Haerbin 150080��China |
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Abstract��
Wulandele plulon is a large-scale complex massif generated by twice magmatism�� The complex massif is made up of biotite-granite and biotite-monzogranite��aged in 140 ± 2 Ma and 161 ± 1 Ma��respectively�� The biotite-granite reflects highly fractionated characteristics geochemically�� While the biotite-monzogranite implies low Sr and high Yb in geochemical characteristics�� Geochemical data suggest that the biotite-monzogranite are Atype granites��which tectonic setting was are mainly dominated by the extensional system�� |
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Keywords��
Inner Mongolia
granite
magmatism
Late Jurassic
Early Cretaceous
Wulandele pluton
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