Our faculty and staff engage in research projects aimed at mechanisms of continental deformation, the origin of sedimentary layering patterns, Neoproterozoic Earth history, and orbital forcing of the Earth's climate and its geological consequences. Current research is interdisciplinary and field-based, making connections between sedimentary and structural geology, paleomagnetism, isotope geochemistry, and geochronology. Our approach to science is eclectic, with a focus on fundamental problems in crustal geology. We collaborate actively with colleagues in geophysics, geochemistry, geochronology and paleoclimatology, and with paleontologists at the American Museum of Natural History. Opportunities are available for Columbia students to learn about and to undertake projects, and to participate in field excursions that are organized regularly for both undergraduate and graduate students.