详细信息
Zircon U-Pb Ages and Geochemistry of the Granite in the Xintianling Tungsten Deposit, SE China: Implications for Geodynamic Settings of the Regional Tungsten Mineralization ( SCI-EXPANDED收录) 被引量:4
文献类型:期刊文献
英文题名:Zircon U-Pb Ages and Geochemistry of the Granite in the Xintianling Tungsten Deposit, SE China: Implications for Geodynamic Settings of the Regional Tungsten Mineralization
作者:Yang, Wu Zhang, Min Yan, Jun Chen, Xiaocui
第一作者:杨梧
通信作者:Chen, XC[1]
机构:[1]Guizhou Inst Technol, Fac Resources & Environm Engn, Guiyang 550003, Peoples R China
第一机构:贵州理工学院
通信机构:corresponding author), Guizhou Inst Technol, Fac Resources & Environm Engn, Guiyang 550003, Peoples R China.|贵州理工学院;
年份:2022
卷号:12
期号:8
外文期刊名:MINERALS
收录:;Scopus(收录号:2-s2.0-85137756842);WOS:【SCI-EXPANDED(收录号:WOS:000845532200001)】;
基金:This research was supported by the Major Research plan of National Science Foundation of China [92062106], the Science and Technology Support Plan of Guizhou Province [Qian (2017)1078] and Qian (2019)1138], the High-level talent introduction program for the Guizhou Institute of Technology (0203001018040).
语种:英文
外文关键词:zircon U-Pb; granite geochemistry; genesis; Xintianling tungsten deposit
摘要:The Xintianling tungsten deposit is a super-large deposit in the Nanling tungsten-tin mineralization belt, which is genetically associated with the early-stage hornblende-biotite monzonitic granite of Qitianling pluton. The orebodies predominantly occur as veins and lenses within skarn rocks between Xintianling granite and limestone (Shidengzi group). In this work, whole-rock major and trace elements and zircon U-Pb ages of the Xintianling granite were studied in an attempt to investigate the geochronological framework, petrogenesis, tectonism, and metallogenesis with regard to the deposit. The petrographic and geochemical analyses indicated that the Xintianling granite consists of three intrusive units of medium- and coarse-grained biotite granite, fine-grained biotite granite, and granite porphyry, of which the biotite granite was strongly associated with mineralization. Biotite granite rocks are highly K-calc-alkaline and weakly peraluminous, with A/CNK ratios ranging from 0.99 to 1.05. Late-granite porphyry is aluminum-supersaturated with a high evolution degree, whose geochemical characteristics suggest that it is either an I- or S-type granite. LA-ICP-MS zircon U-Pb dating revealed that medium- and coarse-grained biotite granite (162.3 +/- 1.2 Ma, MSWD = 1.3), fine-grained biotite granite (161.8 +/- 1.3 Ma, MSWD = 1.8), and granite porphyry (154.3 +/- 1.6 Ma, MSWD = 2.4) formed in the late Jurassic. The emplacement of the Qitianling A-type granite and associated tungsten-tin polymetallic mineralization is a continuous evolution process, and they are products of the large-scale mineralization of the Nanling in the middle-late Jurassic (150-160 Ma). Under the tectonic setting of the Mesozoic lithospheric extension, asthenosphere upwelling along deep-fault, intensive mantle-crust interaction processes probably provide not only the high heat flow, but also partly mantle-derived material for large-scale W-Sn-polymetallic mineralization in this area.
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