Liquid CO2 drives rapid thrust of diamond-bearing structures

In the May 3 issue of Nature, James Head, a Brown University professor of geology and Lionel Wilson, a professor of volcanology at the University of Lancaster, propose an inte-grated and dramatic mechanism for the formation of kimberlites, the enigmatic structures bearing most of the world’s diamonds. Their theory explains many puzzling features of the formations and also suggests that the location of kimberlites is not related to near-surface geology.