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- Title
Experimental estimation of the rate of gravitation fractionating of xenocrysts in kimberlite magma at high P-T parameters.
- Authors
Chepurov, A.; Zhimulev, E.; Sonin, V.; Tomilenko, A.; Pokhilenko, N.
- Abstract
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 impossibility of preservation of heterogeneity in these melts for a sufficiently long time.
- Subjects
GRAVITATION; KIMBERLITE; MAGMAS; VISCOUS flow; EXPERIMENTAL design
- Publication
Doklady Earth Sciences, 2011, Vol 440, Issue 2, p1427
- ISSN
1028-334X
- Publication type
Article
- DOI
10.1134/S1028334X11100138