Abstract
Comprehensive studies of peridotitic xenoliths from the Udachnaya kimberlite (Yakutian diamond province, Siberian craton) confirm that garnet shows inverse correlation of its volumetric percentage with its Cr2O3 contents in refertilizated peridotites, but no such correlation is observed in depleted peridotites. The correlation relationship plots as an isosceles hyperbola, which is consistent with the existing knowledge of origin of refertilized peridotite. The bulk content of aluminum is proportional to the garnet percentage both in depleted and refertilized peridotites, but Al2O3 in the rock correlates with Cr2O3 in garnet only in the refertilized varieties, while the two parameters are independent in depleted mantle rocks. According to the modeling of refertilization-related composition changes in the Udachnaya peridotites, garnet percentages are directly proportional to the amount of clinopyroxene (Gnt = 0.879*Cpx + 0.022, R2 = 0.78) and inversely proportional to that of olivine (Gnt = 0.026/Ol3.141, R2 = 0.79). As the shares of Gnt and Cpx increase from minimum values, orthopyroxene first increases (to 0.16) and then decreases since 0.65 Ol, 0.09 Cpx, and 0.10 Gnt. This model can constrain the place of the parent rock in the refertilization series knowing Cr2O3 contents in separate garnet grains. The average refertilization degree of lithospheric mantle in the region estimated from the compositions of more than 800 garnet xenocrysts in the Udachnaya kimberlite is expressed in the rock modal composition as: Ol = 0.72, Opx = 0.15, Gnt = 0.07, and Cpx = 0.06 (median values).
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REFERENCES
A. M. Agashev, D. A. Ionov, N. P. Pokhilenko, A. V. Golovin, Yu. Cherepanova, and I. S. Sharygin, Lithos, No. 160–161, 201–215 (2013).
S. R. Burgess and B. Harte, in Proc. 7th Int. Kimberlite Conf. (Elsevier, Cape Town, 1998), No. 1, pp. 66–80.
L. S. Doucet, D. A. Ionov, and A. V. Golovin, Contrib. Mineral. Petrol., No. 165, 1225–1242 (2013).
J. Fiala, Krystalinikum, No. 3, 55–74 (1965).
D. A. Ionov, Z. Liu, J. Li, A. V. Golovin, A. V. Korsakov, and Y. Xu, Geochim. Cosmochim. Acta, No. 281, 67–90 (2020).
D. Ionov, L. S. Doucet, and I. V. Ashchepkov, J. Petrol., No. 51 (11), 2177–2210 (2010).
W. F. McDonough and S.-S. Sun, Chem. Geol., No. 120, 223–253 (1995).
W. F. McDonough, Earth Planet. Sci. Lett., No. 101, 1–18 (1990).
N. P. Pokhilenko, Extended Abstract of Doctor Dissertation (Geol.-Mineral.), Inst. Geol. Geophys., Novosibirsk, 1990.
N. P. Pokhilenko, N. V. Sobolev, F. R. Boyd, D. J. Pearson, and N. Shimizu, Russ. Geol. Geophys., 34 (1), 56–67, 1993.
N. P. Pokhilenko, N. V. Sobolev, S. S. Kuligin, and N. Shimizu, in Proc. 7th Int. Kimberlite Conf. (Elsevier, Cape Town, 1999), No. 2, pp. 689–698.
D. J. Schulze, Lithos, No. 71, 195–213 (2003).
N. V. Sobolev, Deep-Seated Inclusions in Kimberlites and the Problem of the Composition of the Upper Mantle (AGU: Washington, D. C., 1977).
N. V. Sobolev, Yu. G. Lavrent’ev, L. N. Pospelova, and E. V. Sobolev, Dokl. Akad. Nauk SSSR 189 (1), 162–165 (1969).
15. L. V. Solov’eva, Yu. G. Lavrent’ev, K. N. Egorov, S. I. Kostrovitskii, V. N. Korolyuk, and L. F. Suvorova, Russ. Geol. Geophys. 49 (4), 207–224 (2008).
N. S. Tychkov, A. M. Agashev, N. P. Pokhilenko, and I. S. Bazhan, Dokl. Earth Sci. 439 (2), 1175–1179 (2011).
N. S. Tychkov, A. M. Agashev, E. V. Malygina, E. I. Nikolenko, and N. P. Pokhilenko, Dokl. Earth Sci. 454 (1), 84–89 (2014).
N. S. Tychkov, N. P. Pokhilenko, S. S. Kuligin, and E. V. Malygina, Russ. Geol. Geophys. 49 (4), 302–318 (2008).
S. A. C. Webb and B. J. Wood, Contrib. Mineral. Petrol., No. 92, 471–480 (1986).
N. V. Sobolev, Deep Inclusions in Kimberlites and Problem of Upper Mantle Composition (Nauka, Novosibirsk, 1974) [in Russian].
W. L. Griffin, C. G. Ryan, F. V. Kaminsky, S. Y. O’Reilly, L. M. Natapov, T. T. Win, P. D. Kinny, and I. P. Ilupin, Tectonophysics 310, 1–35 (1999).
Funding
This work is done on state assignment of IGM SB RAS and was supported by grant nos. 18-05-01143 and 20-05-00662 from the Russian Foundation for Basic Research. Analytical research was carried out with the support of the Russian Science Foundation grant no. 18-17-00249.
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Tychkov, N.S., Agashev, A.M. & Pokhilenko, N.P. Lithospheric Refertilization Trends in Xenoliths and Xenocrysts from the Udachnaya Kimberlite (Siberian Craton). Dokl. Earth Sc. 499, 634–638 (2021). https://doi.org/10.1134/S1028334X21080213
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DOI: https://doi.org/10.1134/S1028334X21080213