Understanding earth history

Because high-precision geochronology is so important in understanding the timing and rates of geologic processes and events in earth history, I have a growing interest in studying the connections between the solid earth with the ocean-atmosphere system, paleoclimate, and life. One area of study is in mass extinctions, but others examples of projects I'm involved in include carbon cycling and life in the Neoproterozoic and in the early Devonian. These projects are always in collaboration with stratigraphers, geochemists, paleontologists, paleomagnetists, and other people with widely varying expertise. My collaborators at Princeton include Adam Maloof, John Higgins, Gerta Keller and Michael Bender.