Graham Pearson is a mantle geochemist whose research interests focus on the origin and evolution of the continental lithospheric mantle and its diamond cargo. The current region of interest is Arctic Canada and its diamond-bearing roots. Through the study of mantle xenoliths I try to evaluate how cratons are formed and how they have evolved. My research group has developed new methods for dating diamonds and analyzing ultra-low level trace element impurities in the diamond lattice. Current efforts are focused on using such data to try to distinguish a diamond’s place of origin, with application to supporting the Kimberley Process. I apply radiogenic isotopes (specialising in the Re-Os and Pt-Os systems) to the geochronology and tracing of mantle rocks and mantle-derived magmas such as kimberlites. I use the systematics of platinum group element geochemistry to investigate a wide range of phenomena ranging from lunar evolution to the interaction between DNA and metallodrugs.
I am interested in attracting graduate students and post-doctoral researchers to work in the following areas:
Theory and systematics of radioactive decay, geochronology and isotopic tracing U-Pb, Rb-Sr, Sm-Nd, Re-Os and other radioisotope systems. Applications of natural radioactive isotope variation to a variety of problems spanning low and high temperature geologic processes. [Faculty of Science]Fall Term 2022