Sophie Lehmann , who has worked with David Braun at Elandsfontein and is currently completing her PhD at John Hopkins University , USA will present a seminar entitled, "Studies of carbon, oxygen and strontium isotopes in tooth enamel: evaluating paleoenvironmental change in southwestern South Africa and expanding the paleoclimate tool kit". 

Sophie will discuss the ways in which carbon oxygen and strontium systems have helped us evaluate past climate, environment and the interaction between animals and their environments in southwestern South Africa over the Pliocene and Pleistocene using fossil tooth enamel. She will also discuss the limitations of the ¹⁸O/¹⁶O oxygen isotope system to evaluate past aridity and the potential of using fossil tooth enamel triple oxygen isotopes (¹⁸O/¹⁶O and ¹⁷O/¹⁶O) to address these limitations, thus expanding upon the evaluation of past climate and environment.