My main research interests are on the mechanics of crustal deform-ation, particularly on convergent plate boundaries, collisional orogens, extending back-arc regions, and transform fault zones.  My research methods include field-based structural geology, integrated with the mechanical analysis of large-scale dynamic systems such as thrust belts and collisional plateaux.  This is supported by microstructural analysis to elucidate rheology and crustal strength, thermobarometry and geochronology to define pressure-temperature-time paths of rocks, and paleomagnetism to determine the rotational history.  I work in collaboration with scientists from many other disciplines, including geophysics, geochronology, and petrology.