Инд. авторы:	Chepurov A.I., Zhimulev E.I, Sonin V.M., Chepurov A.A., Tomilenko A.A., Pokhilenko N.P.
Заглавие:	Experimental estimation of the rate of gravitation fractionating of xenocrysts in kimberlite magma at high P-T parameters
Библ. ссылка:	Chepurov A.I., Zhimulev E.I, Sonin V.M., Chepurov A.A., Tomilenko A.A., Pokhilenko N.P. Experimental estimation of the rate of gravitation fractionating of xenocrysts in kimberlite magma at high P-T parameters // Doklady Earth Sciences. - 2011. - Vol.440. - Iss. 2. - P.1427-1430. - ISSN 1028-334X. - EISSN 1531-8354.
Внешние системы:	DOI: 10.1134/S1028334X11100138; SCOPUS: 2-s2.0-84855886490;
Реферат:	eng: This report considers experimental studies of the gravitation fractionating of xenocrysts (diamond, garnet, and olivine) in kimberlite magma at 4.0 GPa and 1400°C. The values obtained (0.6-0.7 m/h for 0.3-mm diamond crystals, 0.36 m/h for garnet grains, and 0.6-0.29 m/h for olivine grains) point to a high rate of xenocryst sinking in the ultralow-viscous kimberlite magma (as high as 1 m/h and more, depending on the densities and grain sizes of minerals). A high rate of xenocryst sinking in kimberlite magma results in the impossi-acty bility of preservation of heterogeneity in these melts for a sufficiently long time. © Pleiades Publishing, Ltd., 2011.
Ключевые слова:	Experimental studies; Grain size; High rate; Kimberlite magmas; Xenocrysts; Garnets; Olivine; Gravitation; density; diamond; fractionation; heterogeneity; xenolith; P-T conditions; magma; Diamond crystals; kimberlite;
Издано:	2011
Физ. характеристика:	с.1427-1430