Jon Husson

Jon Husson

Assistant Professor, University of Victoria

I study the evolution of Earth's surface environment over geologic timescales, and in particular focus on the interactions between the biosphere, climate, sea level and ocean geochemistry. To this end, Earth's sedimentary carapace is our only archive that documents the ~4 billion year recorded history of the surface environment. Thus, my work is grounded in field observations of sediments, particularly of carbonates — precipitates that simultaneously record information about the chemical, physical and biological conditions in which they formed. Field campaigns are supplemented by the development of geochemical (δ¹³C, δ¹⁸O, δ44Ca, δ26Mg, trace element) time series and age models anchored by U-Pb dating of volcanic zircon via CA-ID-TIMS. I also explore Earth history at a larger spatial and temporal scale by working with Macrostrat, a database that seeks to describe the distribution of rocks in the upper crust. Working with the machine-reading and -learning initiative GeoDeepDive, I seek to model continental patterns of sedimentation and its changing properties, and explore the attendant implications for the evolution of biogeochemical cycles.