Dr. Jan Veizer

He has developed and systematized a quantitative concept of recycling of the Earth's crust that is complementary to its evolutionary counterpart, thereby reconciling competing observations of repetition and uniqueness in the geological record. He has demonstrated that the composition of paleo-seawater reflects the evolution of the atmosphere-hydrosphere-biosphere system; that Sr and C isotope age curves are covariant with S isotopes and tectonics; and has provided direct evidence for the unity of the organic and inorganic world on geological time scales. Through his treatment of chemical diagenesis of carbonate rocks, he established experimentally a tool for quantitative treatment of carbonate diagenesis. His work is known and respected throughout the world; he is an outstanding teacher and research leader.