Gernon, T.M., M. Field, R.S. Sparks, R.J. Brown, G. Fontana, and C. Mac Niocaill. 2008. “Pyroclastic Flow Deposits from a Kimberlite Eruption: Orapa South Crater, Republic of Botswana”. International Kimberlite Conference: Extended Abstracts 9 (October). https://doi.org/10.29173/ikc3420.