Abstract
Zircon U-Pb dating by the LA-ICP-MS method was applied to determining the ages of different units of the Guposhan granite complex, among which the East Guposhan unit is 160.8±1.6 Ma, the West Guposhan unit is 165.0±1.9 Ma, and the Lisong unit is 163.0±1.3 Ma in age. Much similarity in ages of the three units has thus proved that the whole Guposhan granite complex was formed in the same period of time. They were the products of large-scale granitic magmatism through crust-remelting in the first stage of the Middle Yanshanian in South China. However, the three units have differences both in petrology and in geochemistry. Besides the differences in major, trace and rare-earth elements, they are distinct in their Rb-Sr and Sm-Nd isotopic compositions. The East Guposhan unit and Lisong unit and its enclaves have a similar (87Sr/86Sr)i value of 0.7064 with an average of ɛNd(t)=−3.03, indicating that more mantle material was evolved in the magma derivation; whereas the West Guposhan unit has a higher (87Sr/86Sr)i value of 0.7173 but a lower ɛNd(t) value of −5.00, and is characterized by strong negative Eu anomalies and higher Rb/Sr ratios, suggesting that its source materials were composed of relatively old crust components and new mantle-derived components. In addition, an inherited zircon grain in the East Guposhan unit (GP-1) yielded a 206Pb/238U age of 806.4 Ma, which is similar to the ages of the Jiulin cordierite granite in northern Jiangxi and of the Yinqiao migmatic granite in Guangxi in the HZH granite zone. All this may provide new evidence for Late Proterozoic magmatism in the HZH granite zone.
Similar content being viewed by others
References
Allegre G.J. and Othman D.B. (1980) Nd-Sr isotopic relationship in granitoid rocks and continental crust development: A chemical approach to orogenesis [J]. Nature. 286, 335–341.
Bao Zhiwei and Zhao Zhenhua (2003) Geochemistry and tectonic setting of the Fugang aluminous a-type granite, Guangdong province, China—a preliminary study [J]. Geology Geochemistry. 31, 52–61 (in Chinese with English abstract).
Belousova E.A., Griffin W.L., Shee S.R. et al. (2001) Two age populations of zircons from the Timber Creek kimberlites, Northern Territory, as determined by laser-ablation ICP-MS analysis [J]. Australian Journal of Earth Sciences. 48, 757–765.
Chen Chun, Song Linkang, and Liu Liwen (1992) Research on the rare-earth element existence in Guposhan main granite magma mass [J]. Mineralogy and Petrology. 12, 38–45 (in Chinese with English abstract).
Chen Jiangfeng, Guo Xinsheng, Tang Jiafu, and Zhou Taixi (1999) Nd isotopic model ages: implications of the growth of the continental crust of southeastern China [J]. Journal of Nanjing University (Natural Sciences). 35, 649–658 (in Chinese with English abstract).
Chen Yuchuan and Mao Jingwen (1995) Metallogenic Series of Ore Deposits and Metallogenic Evolution Through Geologic History in North Guangxi [M]. Guangxi Science and Technology Press, Nanning (in Chinese).
Chen Peirong, Hua Renmin, Zhang Bangtong Lu Jianjun, and Fan Chunfang (2002) Early Yanshanian post-orogenic granitoids in the Nanling region [J]. Science in China (Series D). 45, 755–768 (in Chinese).
Chen Peirong, Zhou Xinmin, Zhang Wenlan, Li Huimin, Fan Chunfang, Sun Tao, Chen Weifeng, and Zhang Min (2004) Petrogenesis and geological significance of Early Yanshanian syenite-granitoid in the east sector of Nanling Range [J]. Science in China (Series D). 36, 493–503 (in Chinese).
Chen Xiaoming, Wang Rucheng, Liu Changshi, Hu Huang, Zhang Wenlan, and Gao Jianfeng (2002) Isotopic dating and genesis for Fogang biotite granites of Conghua area, Guangdong Province [J]. Geological Journal of China Universities. 8, 293–307 (in Chinese with English abstract).
Deng Qingping (1985) On the ore-forming mechanism of cassiterite-sulfide deposit in Beimianshan, Guangxi [J]. Journal of Guilin College of Geology. 5, 239–250 (in Chinese with English abstract).
Fan Chunfang and Chen Peirong (2000) Nd and Sr isotopic compositions of Pitou granitiod in south Jiangxi Province [J]. Contributions to Geology and Mineral Resources Research. 15, 282–287 (in Chinese with English abstract).
Fan Honghai, Ling Hongfei, Wang Dezi, Sheng Weizhou Liu Changshi, and Jiang Yaohui (2001) Ore-forming material sources for Xiangshan uranium Orefield in Jiangxi Province: Evidence from Nd-Sr-Pb isotopes [J]. Geological Journal of China Universities. 7, 139–145 (in Chinese with English abstract).
Feng Zuohai, Liang Jincheng, Zhang Guilin, Li Xiaofeng, and Deng Jixin (2002) On the lithodemic units of Mesozoic granitoid in east Guangxi [J]. Journal of Guilin Institute of Technology. 22, 333–340 (in Chinese with English abstract).
Gilder S.A., Gill J., Coe R.S. et al. (1996) Isotopic and paleomagnetic constraints on the Mesozoic tectonic evolution of south China [J]. Journal Geophy. Res. 101(B7), 16137–16154.
Gong An, Wen Suying, and Wei Yushan (1985) Origin and evolution of the west part of Guposhan granite [J]. Journal of Guilin College of Geology. 5, 21–30 (in Chinese with English abstract).
Hou Zengqian, Lu Jiren, and Lin Shengzhong (2005) The axial zone consisting of pyrolite and eclogite in the Emei mantle plume: Major, trace element and Sr-Nd-Pb isotope evidence [J]. Acta Geologica Sinica. 79, 200–219 (in Chinese with English abstract).
Hu Gongren, Liu Congqiang, Zhang Bangdong, Tang Hongfeng, and Yu Ruilian (2005) Elemental geochemistry and Nd isotopic characteristics of the metasedimentary rocks from the metamorphic belt in central Jiangxi: Provenance and tectonically environmental constraints [J]. Chinese Journal of Geochemistry. 24, 37–50.
Hua Renmin, Chen Peirong, Zhang Wenlan, Liu Xiaodong, Lu Jianjun, Lin Jinfu, Yao Junming, Qi Huawen, Zhang Zhanshi, and Gu Shengyan (2003) Metallogenic systems related to Mesozoic and Cenozoic granitoids in South China [J]. Science in China (Series D). 46, 817–829 (in Chinese).
Hua Ranmin, Chen Peirong, Zhang Wenlan, and Lu Jianjun (2005a) Three major metallogenic events in Mesozoic in South China [J]. Mineral Deposits. 24, 99–107 (in Chinese with English abstract).
Hua Renmin, Chen Peirong, Zhang Wenlan, Yao Junming, Lin Jinfu, Zhang Zhanshi, Gu Shengyan Liu Xiaodong, and Qi Huawen (2005b) Metallogenesis related to Mesozoic granitoids in Nanling range, South China and their geodynamic settings [J]. Acta Geologica Sinica. 79, 810–820 (in Chinese with English abstract).
Huang Jiqing (1981) The Geotectonics and Its Evolution of China [M]. pp.29–53. Science Press, Beijing (in Chinese).
Huang Xuan and Wu Liren (1990) Nd-Sr isotopes of granitoids from Shanxi Province and their significance for tectonic evolution [J]. Acta Petrologica Sinica. 6, 1–11 (in Chinese with English abstract).
Jian Ping (1989) Isotope geochronology of migmatite and granite in the southwestern end of Yun-Kai uplift zone. In Proceedings on the 4 th Isotope Geochronology and Geochemistry [C]. pp.56–60. Hangzhou, China.
Li Xanhua, Zhao Zhenhua, and Gui Xuntang (1991) Sm-Nd isotopic and zircon U-Pb constraints on the age of formation of the Precambrian crust in Southeast China [J]. Geochimica. 3, 255–264 (in Chinese with English abstract).
Liew T.C. Hofmann A.W. (1988) Precambrian crustal components, plutonic assimilations, plate environment of the Hercynian Fold belt of central Europe: Indications from a Nd and Sr isotopic study [J]. Mineral. Petrol. 98, 129–138.
Liu Haichen, Zhu Bingquan, and Zhang Zhanxia (1998) The study of single zircon LAM-ICPMS U-Pb dating [J]. Chinese Science Bulletin. 43, 1103–1106 (in Chinese).
Ludwig K.R. (1991) ISOPLOT: A plotting and regression program for radiogenic-isotope data. In US Geological Survey Open-File Report [C]. pp. 39.
Machado N. and Gauthier G. (1996) Determination of 207Pb/200Pb ages on zircon and monazite by laser-ablation ICPMS and application to a study of sedimentary provenance and metamorphism in southeastern Brazil [J]. Geochimica et Cosmochimica Acta. 60, 5063–5073.
Mao Jingwen and Li Hongyan (1995) Nd-Sr isotopic and petrogenetic studies of the Qianlishan granite stock, Hunan Province [J]. Mineral Deposits. 14, 235–242 (in Chinese with English abstract).
McCulloch M.T. and Wasserburg G.J. (1978) Nd and Rb-Sr chronology of continental crust formation [J]. Science, 200, 1003–1011.
Mculloch M.T. and Chappell B.W. (1982) Nd isotopic characteristics of S-and I-type granites [J]. Earth Planet. Sci. Letters. 58, 51–64.
Nam T.N., Sano Y., Terada K. et al. (2001) First SHRIMP U-Pb zircon dating of granulites from the Kontum massif (Vietnam) and tectonothermal implications [J]. Journal of Asian Earth Sciences. 19, 77–84.
Norman M.D., Pearson N.J., Sharma A. et al. (1996) Quantitative analysis of trace elements in geological materials by laser ablation ICPMS: Instrumental operating conditions and calibration values of NIST glasses [J]. Geostandards Newsletter. 20, 247–261.
Pearce J.A. (1982) Trace element characteristics of lavas from destructive plate boundaries. In Andesits Chichester [M]. pp.525–548. Wiley, New York.
Pearce J.A. (1983) Role of the sub-continental lithosphere in magma genesis at active continent margins. In Continental Basalts and Mantle Xenoliths [M]. pp. 230–249. Shiva, Nantwich.
Qiu Jiansheng, Hu Jian, Wang Xiaolei, Jiang Shaoyong, Wang Lucheng, and Xu Xisheng (2005) The Baishigang pluton in Heyuan, Guangdong Province: A highly fractionated I-type granite [J]. Acta Geoologica Sinica. 79, 504–514 (in Chinese with English abstract).
Research Group of the Nanling Granite Project, MGMR (1989) Geology of Granitoids of Nanling Region and Their Petrogenesis and Mineralization [M]. pp.171–185. Geological Publishing House, Beijing (in Chinese).
Shen Weizhou, Ling Hongfei, Li Huimin, Li Wuxian, and Wang Dezi (2000a) The thermal history of the miarolitic granite at Xincun, Fujian Province, China [J]. Chinese Science Bulletin. 45, 1991–1995 (in Chinese).
Shen Weizhou, Ling Hongfei, Li Wuxian, and Wang Dezi (2000b) Crust evolution in Southeast China: Evidence from Nd model ages of granitoids [J]. Science in China (Series D). 43, 36–49 (in Chinese).
Song Biao, Zhang Yuhai, and Wan Yusheng (2002) Mount making and procedure of the SHRIMP dating [J]. Geological Review. 5(sup.), 26–30 (in Chinese with English abstract).
Taylor S.R. and McLemann S.M. (1985) The Continental Crust: Its Composition and Evolution [M]. pp.312. Oxford Press, Blackwell.
Wang Jianghai, Tu Xianglin, and Sun Dazhong (2001) U-Pb dating of anatectic migmatites in the Yunkai Block, Gaozhou, Western Guangdong [J]. Chinese Journal of Geochemistry. 20, 20–27.
Wiedenbeck M., Alle P., and Corfu F. (1995) Three natural zircon standards for U-Th-Pb, Lu-Hf, trace element and REE analyses [J]. Geostand Newsl. 19, 1–23.
Yang Xueming and Zhang Peishan (1990) Geological significance of Pb-Sr and Pb isotope to the limitation of sources of granitic rocks [J]. Chinese Science Bulletin. 35, 1176–1176 (in Chinese).
Zhang Dequan, Wang Xueying, and Sun Guiying (1985) Cooling history and emplacement ages of the Guposhan-Lisong granite masses, Guangxi [J]. Geological Review. 31, 232–239 (in Chinese with English abstract).
Zhang Min, Chen Peirong, Zhang Wenlan, Chen Weifeng, Li Huimin, and Zhang Mengqun (2003) Geochemical characteristics and petrogenesis of Dadongshan granite pluton in mid Naling range [J]. Geochimica. 32, 529–539 (in Chinese with English abstract).
Zhang Peihua (2003) On the Crust-Mantle Interaction of Mesozoic Granitoids in the Middle Sector of Nanling Area, Southern China [D]. Nanjing University, Nanjing (in Chinese).
Zhu Jinchu, Li Xiangdong, and Shen Weizhou (1989) Sr, Nd and O isotope studies on the genesis of the Huashan Granite complex [J]. Acta Geologica Sinica. 63, 225–235 (in Chinese with English abstract).
Zhu Jinchu, Zhang Peihua, Xie Caifu, Zhang Hui, and Yang Ce (2006) The Huashan-Guposhan A-type granitoid belt in the western part of the Nanling mountains: Petrology, geochemistry and genetic interpretations [J]. Acta Geologica Sinica. 80, 529–542 (in Chinese with English abstract).
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Gu, S., Hua, R. & Qi, H. Zircon LA-ICP-MS U-Pb dating and Sr-Nd isotope study of the Guposhan granite complex, Guangxi, China. Chin. J. of Geochem. 26, 290–300 (2007). https://doi.org/10.1007/s11631-007-0290-5
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/s11631-007-0290-5