Conclusions
The oxygen isotopic composition of mantle-derived materials from Anhui-Jiangsu basalt province indicates the mantle heterogeneity in δ18O and the coherence between δ18O and Sr-Nd isotopic composition for the mantle beneath the province. The oxygen isotopic compositions of the basalts from the Luhe-Yizheng area, the clino- and orthopyroxenes in spinel lherzolite xenoliths from the province and mineral megacrystals from Nushan and Panshishan are as same as those of normal mantle in a first approximation. The basalts from the Jiashan-Lai’an area have high δ18O, and Nd-Sr isotopic compositions of the basalts are the same as those of EM-type enriched mantle. The residual of recycled crustal materials supply the relevant enriched component, and mantle mixture produces the enriched source from which the basalts were derived.
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References
Harmon, R. S., Hoefs, J., Oxygen isotope heterogeneity of the mantle deduced from global δ18O systematics of basalts from different geotectonic settings,Contrib. Mineral. Petrol., 1995, 120r 95.
Kyser, T. K.. Stable isotopes in the continental lithospheric mantle.Continental Mantle (ed. Menzies, M. A.). Oxford: Clarendon Press, 1990. 127–156.
Zhi Xiachen. Trace element geochemistry of Tertiary continental alkalic basalt from Luhe-Yizheng, Jiangsu Province, China,Acta Petrulogica Sinica (in Chinese), 1990, 6(2): 30.
Zhi Xiachen, Chen Lhgong. Yang Jing, Petqenesis and geochcmistry of Neogene basalts in eastern Anhui,Acta Gdqica Sinicu (in Chinese). 1995. 69: 156.
Zhi Xiachen, Chen Dacgong, Zhang Zongqinget al., Neodymium and sumtiurn isotopic compositions for Late Tertiary alkalic basalts from Luhe-Yizheng, Jiangsu Province, China,Acta Petrologica Sinica (in Chinese), 1994, 10: 382.
Zindler, A., Hart, S. R., Chemical geodynamics,Ann. Rev. Earth Planet. Sci., 1986, 14: 493.
Mattey, D., Lowry, D., Macpherson, C., Oxygen isotope mmposition of mantle peridotite,Eurth Planet. Sci. Lett., 1994. 128: 231.
Zheng, Y. F., Calculation of oxygen isotope fractionation in anhydrous silicate minerals,Gemhim. Cosmmhim. Acto, 1993, 57: 1078.
Chen Daogong, Zhi Xiachen, Li Binxianet al., The Nd, Sr and Pb isotopic characteristics of lhenolite xenoliths from Panshishan, Jiangsu Province,Geochimica, 1994, 23: 245.
Zhi Xiachen, Li Binxian. Chen Dacgong. Trace element geochemistry of mantle-derived dide from Panshishan, Jiangsu Province,Scientia Geologica Sinica (in Chinese), 1995, 30: 384.
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Zhi, X., Li, Y. & Zheng, Y. Oxygen isotope composition of mantle-derived materials from Anhui-Jiangsu basalt province, East China. Chin.Sci.Bull. 42, 662–665 (1997). https://doi.org/10.1007/BF03182646
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DOI: https://doi.org/10.1007/BF03182646