Boardman, J. and Foster, I. D. L. (2012) Gullies in the landscape. Invited Presentation presented to: 2012 Geological Society of America (GSA) Annual Meeting and Exposition, Charlotte, North Carolina, 04-07 November 2012.
Boardman, J. and Foster, I. D. L. (2012) Significance of small farm dams in a semi-arid area. Invited Presentation presented to: 2nd Oxford Interdisciplinary Desert Conference: Progress and Integration in Desert Research, School of Geography and the Environment, University of Oxford, 29-30 March 2012.
Foster, I. D. L. (2009) Dating sedimentary sequences. Invited Keynote presented to: International Workshop on the use of Environmental Isotopes for Integrated and Sustainable Management of Natural Resources, Damascus, Syria, September 2009.