eCite Digital Repository

Carbonate-chloride enrichment in fresh kimberlites of the Udachnaya-East pipe, Siberia: A clue to physical properties of kimberlite magmas?

Citation

Kamenetsky, VS and Kamenetsky, M and Sharygin, VV and Golovin, AV, Carbonate-chloride enrichment in fresh kimberlites of the Udachnaya-East pipe, Siberia: A clue to physical properties of kimberlite magmas?, Geophysical Research Letters, 34, (9) pp. 1-5. ISSN 0094-8276 (2007) [Refereed Article]


Preview
PDF
Restricted - Request a copy
205Kb
  

Copyright Statement

Copyright 2007 by the American Geophysical Union

DOI: doi:10.1029/2007GL029389

Abstract

Kimberlites, the deepest terrestrial magmas and the principal source of diamonds, must have low viscosity and high buoyancy, which govern their exceptionally fast transport from mantle depths to the surface. Appreciation of the rheological properties of kimberlite magmas relies on research into their temperatures and compositions. Understanding of the alkali and volatile element budget is central to these studies, but is hampered by contaminated and altered compositions of kimberlites worldwide. Kimberlites of the diamondiferous Udachnaya-East pipe (Siberia) are exceptionally fresh, with low H2O (<0.5 Wt%), but high CO2 (up to 14 wt%), C1 (up to 6 wt%), and alkalies (up to 6 wt% Na2O and 2.0 wt% K2O). After crystallization of olivine the kimberlite melt evolved towards essentially carbonate-chloride compositions. The groundmass assemblage and compositions of the Udachnaya-East kimberlite resemble modern halogen-rich natrocarbonatite lavas from the Oldoinyo Lengai volcano. Rheological measurements on the Oldoinyo Lengai lavas can be used to constrain properties of the kimberlite magma.

Item Details

Item Type:Refereed Article
Keywords:Siberia, Udachnaya-East, pipe, kimberlite, magma, diamond
Research Division:Earth Sciences
Research Group:Geology
Research Field:Igneous and Metamorphic Petrology
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in the Earth Sciences
Author:Kamenetsky, VS (Professor Vadim Kamenetsky)
Author:Kamenetsky, M (Dr Maya Kamenetsky)
ID Code:51612
Year Published:2007
Web of Science® Times Cited:31
Deposited By:Centre for Ore Deposit Research - CODES CoE
Deposited On:2007-08-01
Last Modified:2012-12-06
Downloads:1 View Download Statistics

Repository Staff Only: item control page