Ar-Ar Ages of Hydrothermal Muscovite and Igneous Biotite at the Guposhan-Huashan District, Northeast Guangxi, South China: Implications for Mesozoic W-Sn Mineralization

被引：11
作者：
Li, Xiaofeng [1 ,2 ]
Xiao, Rong [3 ]
Feng, Zuohai [4 ]
Chunxia, Wei [1 ,5 ]
Tang, Yanwen [2 ]
Bai, Yanping [4 ]
Zhang, Mingji [2 ]
机构：
[1] Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China
[2] Chinese Acad Sci, Inst Geochem, State Key Lab Ore Deposit Geochem, Guiyang, Peoples R China
[3] Geol Survey, Hunan Inst, Changsha, Hunan, Peoples R China
[4] Guilin Univ Technol, Guilin, Peoples R China
[5] China Univ Geosci, Sch Earth Sci & Resources, Beijing, Peoples R China
来源：
RESOURCE GEOLOGY | 2015年 / 65卷 / 02期
基金：
中国国家自然科学基金;
关键词：
Ar-Ar age; Cretaceous; Guposhan-Huashan; Jurassic; South China; W-Sn mineralization; CU-MO DEPOSIT; U-PB; WESTERN PART; MAGMATISM; GEOCHRONOLOGY; GEOCHEMISTRY; METALLOGENY; BELT;
D O I：
10.1111/rge.12062
中图分类号：
P5 [地质学];
学科分类号：
0709 ; 081803 ;
摘要：
The Guposhan-Huashan district is an important W-Sn-Sb-Zn-(Cu) metallogenic area in South China. It is located in the middle-west segment of the Nanling Range. Granitoids in the Guposhan-Huashan district possess certain properties of A-type or I-type granites. The W-Sn-Sb-Zn mineralization in the district is closely associated with magma emplacement. Two igneous biotite and seven hydrothermal muscovite samples from skarn, veins and greisenization ores were analyzed by Ar-Ar methods. Two igneous biotite samples from fine-grained quartz monzodiorite and fine-grained biotite granite show plateau ages of 168.7 +/- 1.9 Ma and 165.0 +/- 1.1 Ma, respectively. Seven hydrothermal muscovite samples from ores yield plateau ages as two groups: 165 Ma to 160 Ma and 104 Ma to 100 Ma. These data suggest that the emplacement of fine-grained granitoids in this district is coeval with the main phase magma emplacement, different from previous studies. The W-Sn-Sb-Zn mineralization took place in two stages, i.e. the Middle-Late Jurassic and early Cretaceous. W-Sn mineralization in the Guposhan-Huashan district is closely related to the magmatism, which was strongly influenced by underplating of asthenospheric mantle along trans-lithospheric deep faults and related fractures.
引用
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页码：160 / 176
页数：17
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