Research Interests My research interests include: Evolution of the continental crust as approached by tectonic, chemical, and isotopic studies of modern processes and ancient products. Geographic foci of such studies include Izu-Bonin-Mariana island arc system in the Western Pacific, Neoproterozoic crust of NE Africa and Arabia, China, and Iran. These processes and products are studied using a wide range of analytical techniques, including major and trace element analyses, and radiogenic isotopic compositions of Sr, Nd, and Pb, and U-Pb zircon geochronology. Geologic evolution of thickly sedimented basins, including the Gulf of Mexico, the Aleutian Basin, and the Permian Basin of W. Texas and SE New Mexico Geology of the Dallas-Fort Worth Metroplex. Geoscience videos and animations Meteorites