Journal article
Constraints on kimberlite ascent mechanisms revealed by phlogopite compositions in kimberlites and mantle xenoliths
A Giuliani, D Phillips, VS Kamenetsky, K Goemann
Lithos | Published : 2016
Abstract
Kimberlite magmas are of economic and scientific importance because they represent the major host to diamonds and are probably the deepest magmas from continental regions. In addition, kimberlite magmas transport abundant mantle and crustal xenoliths, thus providing fundamental information on the composition of the sub-continental lithosphere. Despite their importance, the composition and ascent mechanism(s) of kimberlite melts remain poorly constrained. Phlogopite is one of the few minerals that preserves a history of fluid migration and magmatism in the mantle and crust and is therefore an invaluable petrogenetic indicator of kimberlite magma evolution. Here we present major and trace elem..
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Awarded by Australian Research Council
Funding Acknowledgements
AG acknowledges funding from the Australian Research Council through a Discovery Early Career Research Award (DECRA, grant n. DE150100009) and from the Australian Academy of Sciences through a J.G. Russell Award. We are grateful to Graham Hutchinson and Alan Greig for support with the electron microprobe and LA-ICPMS analyses. De Beers Consolidated Mines and Bruce Wyatt are thanked for providing access to the studied samples. This and previous versions of the manuscript were improved by insightful reviews from Hugh O'Brien, Michel Gregoire, Lynton Jaques, Pamela Kempton and 3 anonymous reviewers. Nelson Eby is thanked for the efficient editorial handling. This is contribution 680 from the ARC Centre of Excellence for Core to Crust Fluid Systems (http://www.ccfs.mq.edu.au).