The Siberian Traps Flood Basalts

The Siberian Traps are one of the largest known continental flood basalts, and have been invoked as a trigger for the catastrophic end-Permian mass extinction. Understanding the environmental consequences of volcanism requires quantitative constraints on volatile degassing, the extent of explosive volcanism, and the climatic effects of volcanic emissions in the atmosphere. I approach these problems through a combination of field, laboratory, and modeling techniques.

Erosion on Titan

Titan, Saturn's largest moon, has a dominantly water ice crust and a methane-rich atmosphere. Methane precipitation and runoff appear to have carved river networks on Titan much like those on Earth. I use theoretical predictions of the evolution of drainage networks and measurements of the shapes of drainages on Titan in order to estimate the erosional history of Titan's surface.