Roger Buick

 

Principal Investigator - Roger Buick

Graduate Student - Eva Stueeken

We are working on establishing a method to measure the selenium isotopic composition of geological samples. Selenium is the biogeochemical twin of sulfur, but it has slightly different redox properties. Together the two systems could thus serve as a more powerful proxy to reconstruct gradual changes in atmospheric oxygen levels over time. We are also working on the chemical separation of different selenium and sulfur phases from black shales, which could eventually help us interpret bulk data from rocks of different depositional environments.