Abstract
Minerals of spinel-and garnet-facies mantle xenoliths entrained in Cenozoic basalts from eastern China (North China, Northeastern China and Southeastern China coastal area) contains lots of melt inclusions. Studies on these melt inclusions show that the glass inclusions are rich in SiO2 (60%-68%) and alkalis (K2O+Na2O=5%-11%, especially for K2O) as well as volatiles such as H2O and CO2 (2%-7%), which belong to dacites and andesites of the high-K calcic alkali series rocks with few shoshonites. High Al and Ca diopside in melt inclusion is the product of melt crystallization at high temperature and pressure, rather than the product of devitrification. Results show that these K-rich (in general K2O>3%) intermediate-acidic silicate melt inclusions have characteristics of continent without a genetical link to host basalts and their phenocrystic minerals. Thus, these trapped melt inclusions represent melts of Mesozoic lithospheric mantle-crust interaction and imply that the continental lithospheric mantle beneath eastern China had undergone fragmentation and recreation processes during the Mesozoic and Cenozoic periods. This result undoubtly provides important implication for the evolution of sub-continental lithosphere beneath eastern China. We propose that these Si-and alkalis-rich melts should be responsible for the mantle chemical heterogeneity underneath eastern China.
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References
Roedder, E., Liquid CO2 inclusion in olivine-bearing nodules and phenocrysts from basalts, Am. Mineral., 1965, 50: 1746–1782.
Xia, L. Q., High density CO2 fluid inclusion in peridotite of alkaline basalt in Liuhe and Zhangjiakou of China, Acta Mineralogica Sinica (in Chinese), 1984, 2: 133–142.
Xia, L. Q., Cao, R. R., Characteristics of upper mantle fluid in Xilong areas, Zhejiang Province, Chinese Science Bulletin, 1990, 11: 844–847.
Fan, Q. C., Liu, R. X., Pen, L. G., Characteristics of mantle fluid in Southeastern China coastal area and its significance, Chinese Science Bulletin, 1990, 11: 844–847.
Fan, Q. C., Liu, R. X., Xu, P. et al., Mid-acidic silicate melt found in continental mantle of eastern China, Chinese Sciences Bulleting, 1997, 42(10): 879–880.
Fan, Q. C. Hooper, P. R., The Cenozoic basaltic rocks of eastern China: Petrology and chemical composition, J Petrol, 1991, 32: 765–810.
E., M. R., Zhao, D. S., Cenozoic basalt and Deep-seated xenolith in eastern China, Beijing: Science Press, 1987.
Wang, D. Z., Ren, Q. J., Qiu, J. S. et al., Characteristics of volcanic rocks in the shoshonite province, eastern China, and their metallogenesis, Acta Geologica Sinica (in Chinese), 1996, 70(1): 23–34.
Schiano, P., Clocchiatti, R., Worldwide occurrence of silica-rich melts in sub-continental and sub-oceanic mantle minerals, Nature, 1994, 368(14): 621–624.
Fan, Q. C., Liu, R. X., Li, H. M. et al., Zircon chronology and REE geochemistry of granulite xenolith at Hannuoba, Chinese Science Bulletin, 1998, 43(18): 1510–1515.
Zhai, M. G., Fan, Q. C., Mesozoic replacement of bottom crust in North China Craton:anorogenic mantle-crust interaction, Acta Petrologica Sinica (in Chinese), 2002, 18(1): 18.
Zhang, H. F., Ying, J. F., Xu, P. et al., Mantle olivine xenocrysts entrained in Mesozoic basalts from the North China craton: Implication for replacement process of lithospheric mantle, Chinese Science Bulletin, 2004, 49(9): 961–966.
Wu, F. Y., Walker, R. J., Ren, X. W. et al., Osmium isotopic constraints on the age of lithospheric mantle beneath northeastern China, Chem. Geol., 2003, 196: 107–129.
Gao, S., Rudnick, R. L., Carlson, R. W. et al., Re-Os evidence for replacement of ancient mantle lithosphere beneath the North China Craton, Earth. Planet. Sci. Lett., 2002, 198: 307–322.
Fan, Q. C., Hooper, P. R., The mineral chemistry of ultramafic xenoliths of eastern China: Implications for upper mantle composition and the paleogeotherms, J. Petrol., 1989, 30: 1117–1158.
Schiano, P., Clocchiatti, R., Shimizu, N. et al., Cogenetic silica-rich and carbonate-rich melts trapped in mantle minerals in Kerguelen ultramafic xenoliths: Implications for metasomatism in the oceanic upper mantle, Earth. Planet. Sci. Lett., 1994, 123: 167–178.
Edgar, A. D., Lloyd, F. E., Forsyth, D. M. et al., Origin of glass in upper mantle xenoliths from the quaternary volcanics of Gees,West Eifel, Germany, Contrib. Mineral. Petrol., 1989, 103: 277–286.
Zinngrebe, E., Foley, S. F., Metasomatism in mantle xenoliths from Gees, West Eifel, Germany:evidence for the genesis of calc-alkaline glasses and metasomatic Ca-enrichment, Contrib. Mineral. Petrol., 1995, 122: 79–96.
Wulff-Pedersen, E., Neumann, E. R., Jensen, B. B., The upper mantle under La Palma,Canary Islands:formation of Si-K-Na-rich melt and its importance as a metasomatic agent, Contrib. Mineral. Petrol., 1996, 125: 133–139.
Liu, R. X., Lin, Z. R., Fan, Q. C., Trace elements of fluid inclusion in mantle olivine, Acta Petrologica Sinica (in Chinese), 1992, 8(2): 185–189.
Fan, Q. C., Liu, R. X., Yang, R. Y., LREE-rich CO2 fluid inclusions in mantle minerals in eastern China and their geological significance, Acta Petrologica Sinica (in Chinese), 1993, 9(4): 411–417.
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Fan, Q., Sui, J., Xu, P. et al. Si-and alkali-rich melt inclusions in minerals of mantle peridotites from eastern China: Implication for lithospheric evolution. SCI CHINA SER D 49, 43–49 (2006). https://doi.org/10.1007/s11430-005-0117-3
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DOI: https://doi.org/10.1007/s11430-005-0117-3