Definition of "kimberlite"

kimberlite

noun
countable and uncountable, plural kimberlites
1. (geology) A variety of peridotite containing a high proportion of carbon dioxide; often contains diamonds.
  Quotations
  Some researchers think that the warming was caused as kimberlite pipes (volcanic vents originating deep in the Earth’s mantle) reached the surface near Lac de Gras in northern Canada and released huge amounts of carbon.
  2018, Tim Flannery, Europe: A Natural History, page 54