Journal article
Ultrafresh salty kimberlite of the Udachnaya-East pipe (Yakutia, Russia): A petrological oddity or fortuitous discovery?
VS Kamenetsky, MB Kamenetsky, AV Golovin, VV Sharygin, R Maas
Lithos | ELSEVIER SCIENCE BV | Published : 2012
Abstract
An ultrabasic/ultramafic composition of kimberlite magmas is difficult to reconcile with existing models of the kimberlite mantle source and melting conditions, inferred magma temperatures and rheological properties, and the style of magma ascent and emplacement. The inconsistencies in current thinking indicate serious flaws in understanding kimberlite magma compositions. Much of the uncertainty over true kimberlite compositions may stem from almost ubiquitous hydration and leaching of kimberlite rocks. This study presents petrographic and geochemical data for kimberlite samples largely unaffected by postmagmatic modification, from the Devonian Udachnaya-East pipe in Siberia. These samples a..
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Awarded by Alexander von Humboldt-Stiftung
Funding Acknowledgements
We thank P. Robinson, S. Gilbert, K. McGoldrick and C. Cook for analysing samples, and A Sobolev, G. Yaxley, K. Faure, O. Navon, O. Safonov and G. Brey for fruitful discussions. The original manuscript was significantly changed to account for critical comments by M. Kopylova and anonymous reviewer. We appreciate editorial handling by G. Markl in the situation when the standpoints of the authors and reviewers were radically different. The work was supported by the Alexander von Humboldt Foundation (Germany) in the form of the Wolfgang Paul Award to A. Sobolev, the Friedrich Wilhelm Bessel Award to V. Kamenetsky and sponsoring the PERALK-CARB 2011 meeting in Tubingen, the Australian Research Council Research and University of Tasmania Professorial Fellowships and research funding to V. Kamenetsky and the Russian Foundation for Basic Research (project 10-05-00575) to A. Golovin.