Prof. Shuguang Li – introduction

Shuguang Li is a professor in geochemistry at China University of Geosciences in Beijing (CUGB). He received his B.S. from the Geochemistry Division in the University of Science and Technology of China (USTC) in 1965. Since then, he worked at USTC as an assistant, associate, and full professor until 2012 when he moved to CUGB. At CUGB, he has founded the state of the art Isotope Geochemistry Lab where both radiogenic (Sr, Nd, Pb, Hf, Os) and non-traditional stable (Mg, Fe, Cu, Zn, Cr, Mo, Gd) isotopes are routinely analyzed. As a visiting scholar, he visited Prof. Stan Hart’s group at MIT from 1983 to 1986 and Prof. Al Hofmann’s and E. Jagoutz’s groups at Max Planck Institute for chemistry several times from 1994 to 2003.

Shuanguang Li was elected as a member of the Chinese Academy of Sciences in 2003 and a fellow of the Geochemical Society and the European Association of Geochemistry in 2019. He was the recipient of the He-Liang-He-Li prize in 2005 and won the Second Prize of National Natural Science Award in 2010. Between 2003 and 2018, he was one of the Elsevier Most Cited Researchers in Earth and Planet Sciences. He also served on the 3rd and 4th Supervision Committee of the National Natural Science Foundation.

During his earlier career between 1965 and early 1980s, he was focusing on understanding the origin of the Achaean magnetite-enriched ores in Northeastern China. He successfully predicted a deep rich ore body in Gongchangling magnetite deposit in Northeastern China by using Trend Surface Analysis. He also documented the graphite in rich magnetite ore bodies is formed by decomposition of sedimentary siderite based on their carbon isotopes, and proposed a new geochemical model for the genesis of Gongchangling rich magnetite deposit. This study is awarded the Second Prize of Scientific and Tecnological Progress of China academy of Sciences.

Between 1983 and 2010, he systematically studied the chronology of the collision between the North China and Yangtze blocks, the subsequent evolution history of the suture zone, the formation, cooling and exhumation history of ultrahigh pressure metamorphic rocks (UHPM), and the geochemistry of associated granite and basaltic intrusions. He demonstrated for the first time the existence of large amounts of excess argon in phengite from eclogite and call for greater caution in Ar-Ar dating of phengite from UHPM rocks; defined the early Triassic collision time between the North and South China blocks by using Sm-Nd isotopic dating techniques;defended a first T-t cooling path of the UHPM rocks from the Dabie orogen with two speed cooling‘s; and proposed a multi-slabs and multi-stages fast exhumation model for the Dabie UHPM rocks based on the T-t cooling path and Pb isotopes mapping in the Dabie orogen.

Since 2012, he and his research group leaded to research on deep carbon recycling tracing by Mg isotopes and a lager light Mg isotope anomaly in the mantle of eastern China has been observed, which largely match the extent of a deeply subducted slabs stagnant in the mantle transition zone revealed by seismic tomography. This discovery potentially will provide constraints on the subducted carbon storage in deep convective Earth’s mantle. Based on this result, a recent study suggest that interaction between the CO2-rich silicate melt produced by partial melting of carbonated mantle and lithospheric mantle results in lithospheric thinning of the North China craton, and the CO2-rich silicate melts will be transformed from low- SiO2 strongly alkali melts to high-SiO2 alkali melts.

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Publication (Selected papers):

1.  Li Shuguang, S. R. Hart et al., 1989, timing of collision between the North and South China Blocks: the Sm-Nd isotopc age evidence. Science in China (series B), Vol. 32: 1391-1400.

2.  Li Shuguang, S. R. Hart and Wu Tieshan, 1990, Rb-Sr and Sm-Nd isotope dating of an early Precambrian splite-keratophyre sequence for Nd-isotopic homogenization in the mafic and felsic lavas during low-grade metamorphism. Precambrian Research, Vol. 47: 191-203.

3.  Li Shuguang et al., 1993, collision of the North China and Yangtz Blocks and formation of coesite-bearing eclogites: Timing and processes. Chemical Geology, Vol. 109: 89-111.

4.  Li Shuguang et al., 1994, Excess argon in phengite from eclogite:  Evidence from dating of eclogite minerals by Sm-Nd, Rb-Sr and 40Ar/39Ar methods. Chemical Geology, Vol. 112, 343-350.

5.  Li Shuguang, et al., 2000. Sm-Nd and Rb-Sr isotopic chronology and cooling history of ultrahigh pressure metamorphic rocks and their country rocks at Shuanghe in the Dabie Mountains, central China. Geochim. Cosmochim. Acta, 64(6): 1077-1093.

6.  Li S.-G., Wang C.-X., Dong F., Li Q.-L., Liu Y.-C., Huang F., Chen F.-K., 2009. Common Pb of UHP metamorphic rocks from the CCSD project (100-2000 m): suggesting decoupling within subducting continental crust and thin slab exhumation, Tectonophysics, 475, 308-317.

7.  Liu S-A*, Li S.-G*. He Y-S, Huang F., 2010. Geochemical contrasts between early Cretaceous ore-bearing and ore-barren high-Mg adakites in central-eastern China: Implications for petrogenesis and Cu–Au mineralization. Geochim. Cosmchim. Acta, 74: 7160-7178.

8.  He YS, Li SG*, Hoefs J, Huang F, Liu SA, Hou ZH (2011) Post-collisional granitoids from the Dabie orogen: New evidence for partial melting of a thickened continental crust. Geochimica et Cosmochimica Acta 75: 3815–3838.

9.  Yang W., F.-Z. Teng, H.-F. Zhang, S.-G. Li, 2012. Magnesium isotopic systematics of   continental basalts from the North China craton: Implications for tracing subducted carbonate in the mantle. Chemical Geology, 328: 185-194.

10.  Li Shu-Guang, He YongSheng, Wang ShuiJiong, 2013. Process and mechanism of mountain-root removal of the Dabie Orogen—Constraints from geochronology and geochemistry of post-collisional igneous rocks. Chinese Science Bulletin 58, 4411- 4417.

11.  He Yongsheng*, Li Shuguang*, Jochen Hoefs, Ilka C. Kleinhanns, 2013. Sr-Nd-Pb isotopic compositions of Early Cretaceous granitoids from the Dabie orogen: Constraints on the recycled lower continental crust. Lithos, 156-159: 204-217.

12.  Wang S.-J,* Li S.-G.* Chen L.-J., He Y.-S., An S.-C., Shen J., (2013) Geochronology and geochemistry of leucosomes in the North Dabie Terrane, East China: implication for pos-UHPM crustal melting during exhumation. Contribution of Mineral and Petrology 165,1009-1029, doi: 10.1007/s00410-012-0845-2\

13.  Wang S.-J*, Li S.-G.*Liu S.-A., 2013. The origin and evolution of low-δ18O magma Recorded by multi-growth zircons in granite. Earth and Planetary Science Letters 373: 233–241

14.  Li S.-G., Wang W.-J., Guo S.-S., Xiao Y.-L., Liu L.-Y., Liu S.-A., He Y.-S., Liu J-L., 2014. Geochronology and geochemistry of leucogranites from the southeast margin of the North China Block: Origin and migration. Gondwana Research 26 (2014) 1111–1128.

15.  Wang, S.-J., Teng, F.-Z., Li, S.-G., Hong, J.-A.(2014a) Magnesium isotopic systematics of mafic rocks during continental subduction. Geochimica et Cosmochimica Acta 143, 34-48. .

16.  Wang, S.-J., Teng, F.-Z., Li, S.-G. (2014b) Carbonate-silicate interaction during subduction tracing by Mg and O isotopes. Nature Communications, DOI: 10.1038/ncomms6328.1-6.

17.  Huang J., Li S.-G.*, Xiao Y.-L., Li W.-Y., Tian Y., 2015. Origin of low d26Mg Cenozoic basalts from South China Block and their geodynamic implications. Geochimica et Cosmochimica Acta 164, 298-317.

18.  Ke S., Teng F.-Z.*, Li S.-G.*, Gao T., Liu S.-A., He Y.-S., Mo X.-X., 2016. Mg, Sr, and O isotope geochemistry of syenites from northwest Xinjiang, China: Tracing carbonate recycling during Tethyan oceanic subduction. Chemical Geology 437, 109-119.

19.  Tian H.-C., Yang W.*, Li S.-G.*, Ke S., Chu Z.-Y., 2016. Origin of low d26Mg basalts with EM-I component: Evidence for interaction between enriched lithosphere and carbonated asthenosphere. Geochimica et Cosmochimica Acta 188, 93-105.

20.  Wang Z.-Z., Liu S.-A.*, Ke S., Liu Y.-C., Li S.-G.*, 2016. Magnesium isotopic heterogeneity across the cratonic lithosphere in eastern China and its origins. Earth and Planetary Science Letters 451, 77-88.

21.  Li, S.G*., Yang, W.,  Ke, S.  et al. 2017, Deep carbon cycles constrained by A large-scale Mg isotope anomaly in eastern China. National Science Review 4:111-120. doi: 10.1093/nsr/nww070.

22.  Li S.-G*. and Wang Y.2018. Formation time of the big mantle wedge beneath eastern China and a new lithospheric thinning mechanism of the North China craton—Geodynamic effects of deep recycled carbon. SCIENCE CHINA Earth Sciences; doi:10.1007/s11430-017-9217-7

23.  Tian H-C, Yang W*, Li S-G*, Ke S, Duan X-Z, 2018. Low d26Mg volcanic rocks of Tengchong in Southwestern China: A deep carbon cycle induced by supercritical liquids. Geochimica et Cosmochimica Acta 240 (2018) 191–219.

24.  Shen J*, Li S-G*, Wang S-J, Teng F-Z, Li Q-L, Liu Y-S, 2018. Subducted Mg-rich carbonates into the deep mantle wedge. Earth and Planetary Science Letters 503 (2018) 118–1.

25.  An S-C, Li S-G*, Liu Z, 2018. Modification of the Sm–Nd isotopic system in garnet induced by retrogressive fluids. J Metamorph Geol. 2018;36:1039–1048.