I am a field-based geologist with research interests in large-scale tectonic problems that are addressed through collaborative research and focused, process-related studies. In addition to structural geology and petrology, one of my main tools is radiometric dating of rocks and minerals to quantify absolute timing of events and rates of processes. My students and I integrate observations over a large range of scales from microstructures to regional geological and geophysical data sets, and employ a suite of methodologies to evaluate pressure-temperature-time-deformation (P-T-t-D) histories and the 4D evolution of rocks and regions.