Rate My Professor William Defliese

Defliese specializes in sedimentary geochemistry, focusing on sedimentary geology, paleoclimate reconstruction, and basin analysis using petrology, elemental geochemistry, and stable isotope techniques, particularly clumped isotopes. His research investigates clumped isotope reordering kinetics in carbonates for paleothermometry accuracy and basin heat flow modeling, including applications to burial diagenesis and sediment-hosted ore deposits. Additional areas include carbonate sedimentation and diagenesis, such as the geological history of the Great Barrier Reef, and halogens in sediments and carbonates as paleoenvironmental proxies via combustion ion chromatography. Paleoclimate projects span Holocene climate variability and ENSO, Cenozoic Southern Ocean paleoclimatology, and Neoproterozoic Snowball Earth events. Key publications include 'Carbonate clumped isotope analysis (Δ47) of 21 carbonate standards determined via gas-source isotope-ratio mass spectrometry on four instrumental configurations using carbonate-based standardization and multiyear data sets' (2021, Rapid Communications in Mass Spectrometry), 'Clumped and oxygen isotopes reveal differential disequilibrium in the formation of carbonates from marine methane seeps' (2021, Geochimica et Cosmochimica Acta), 'The impact of Snowball Earth glaciation on ocean water δ18O values' (2021, Earth and Planetary Science Letters), 'Density functional theory and ab initio molecular dynamics reveal atomistic mechanisms for carbonate clumped isotope reordering' (2023, Science Advances), and 'Late-Holocene climate change and cultural evolution in Northwest India' (2025, Quaternary Science Reviews).