[an error occurred while processing this directive] Global Geology 2017, 20(4) 208-216 DOI:   10.3969/j.issn.1673-9736.2017.04.03  ISSN: 1673-9736 CN: 22-1371/P
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monzonitic granite
zircon U-Pb age
geochemistry
Hutouya
Qimantage
Qinghai
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WANG Yang
SUN Fengyue
GAO Hongchang
HE Shuyue
QIAN Ye
XU Chenghan
PubMed
Article by Wang Y
Article by Sun F
Article by Gao H
Article by He S
Article by Qian Y
Article by Xu C
Geochronology and geochemistry of Hutouya monzonitic granite of Qimantage, Qinghai
WANG Yang1, SUN Fengyue1, GAO Hongchang1, HE Shuyue2, QIAN Ye1, XU Chenghan1
1. College of Earth Sciences, Jilin University, Changchun 130061, China;
2. The Third Institute of Qinghai Geological Mineral Prospecting, Xining 810029, China
ժҪ�� The geochemical features of the monzonitic granite in Qimantage Hutouya deposit area, Qinghai, in respect to the mineralization, suggest that this granite belongs to weak peraluminous and high-k calc alkaline rock series. The REE of the samples show right slope with obvious LREE/HREE differentiation and negative Eu abnormity. The trace elements show enrichment of LILE (Rb, Th, U, La, Nd), and deleption of Ba, Sr, Nd, P, Ti. The Sr-Nb isotopic data indicate that the magma source is mainly aluminosilicate lower crust with a small amount of new crustal materials. The weighted mean zircon U-Pbage of the Hutouya monzonitic granite is 221±1.7 Ma, belonging to Late Triassic. The Hutouya monzonitic granite was formed in the tectonic setting of transition from compression to extension during Middle-Late Triassic.
�ؼ����� monzonitic granite   zircon U-Pb age   geochemistry   Hutouya   Qimantage   Qinghai  
Geochronology and geochemistry of Hutouya monzonitic granite of Qimantage, Qinghai
WANG Yang1, SUN Fengyue1, GAO Hongchang1, HE Shuyue2, QIAN Ye1, XU Chenghan1
1. College of Earth Sciences, Jilin University, Changchun 130061, China;
2. The Third Institute of Qinghai Geological Mineral Prospecting, Xining 810029, China
Abstract: The geochemical features of the monzonitic granite in Qimantage Hutouya deposit area, Qinghai, in respect to the mineralization, suggest that this granite belongs to weak peraluminous and high-k calc alkaline rock series. The REE of the samples show right slope with obvious LREE/HREE differentiation and negative Eu abnormity. The trace elements show enrichment of LILE (Rb, Th, U, La, Nd), and deleption of Ba, Sr, Nd, P, Ti. The Sr-Nb isotopic data indicate that the magma source is mainly aluminosilicate lower crust with a small amount of new crustal materials. The weighted mean zircon U-Pbage of the Hutouya monzonitic granite is 221±1.7 Ma, belonging to Late Triassic. The Hutouya monzonitic granite was formed in the tectonic setting of transition from compression to extension during Middle-Late Triassic.
Keywords: monzonitic granite   zircon U-Pb age   geochemistry   Hutouya   Qimantage   Qinghai  
�ո����� 2016-12-20 �޻����� 2017-01-25 ����淢������  
DOI: 10.3969/j.issn.1673-9736.2017.04.03
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