Marine research
After completing his doctorate at Illinois in 1941, Dietz worked after the war as a civilian Navy scientist. He took part in Antarctic research and promoted offshore geological surveying using diving equipment.
References: [1]
Seafloor spreading
In the early 1960s, Dietz and Hess independently published explanations of seafloor spreading; Dietz coined the term. Creation at ridges and consumption at trenches connected ocean-crust history with continental movement.
References: [1]
Impacts and deep exploration
He investigated ancient impact structures and organised Project Nekton, which culminated in Trieste’s 1960 dive to Challenger Deep. In 1977 he joined Arizona State University, continuing impact research and scientific education.
References: [1]