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• A record of ancient cataclysm in modern sand: Shock microstructures in detrital minerals from the Vaal River, Vredefort Dome, South Africa.  Geological Society of America Bulletin .  122:1968. 2010
• Evidence of ancient cataclysm in modern sand: Shock microstructures in detrital quartz, zircon, and monazite from the Vaal River, Vredefort Dome, South Africa [Abstract].  Eos Trans. AGU.  90. 2009
• Shocked minerals in siliciclastic sediments from the Vredefort Dome: A new approach towards searching for impact evidence from the early earth [Abstract].  Eos Trans. AGU.  89. 2008