Marine Geology – Paleoceanography

 

Understanding the marine barite proxy record of  sulfate oxygen and sulfur isotopes (Ph.D.)

Barite is considered a reliable proxy for the sulfur and oxygen isotope ratios of dissolved marine sulfate. However, actual data suggests a considerable uncertainty in this proxy record. This project aims to explore and understand the sources of this uncertainty. This will be done through a series of lab experiments as well as working with ODP/IODP samples. 

Understanding the impact of pyrite dissolution on the Quaternary pCO2 (Ph.D)

Large amounts of pyrite are buried on the continental shelves. During glacial sea-level lowstands these pyrites are re-oxidized to sulfate, contributing substantial amounts of acidity into the ocean. In turn, this could affect DIC and alkalinity, and thus marine pCO2. This project aims to explore these fluxes and their effect on marine carbon chemistry. Applicants should have a strong grasp of the marine carbon chemistry, and be interested in modeling, and coding.

The position is fully funded. For more details contact uli.wortmann@utoronto.ca

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