Plates vs Plumes, A Geological Controversy (Wiley-Blackwell) is indispensable to Earth scientists from all specialties who are interested in the debate between the plate and plume hypotheses. It reviews the plate and plume hypotheses, including a clear statement of the former, then follows an observational approach, drawing widely from many volcanic regions in chapters on vertical motions of Earth's crust, magma volumes, time-progressions of volcanism, seismic imaging, mantle temperature and geochemistry. Plates, Plumes, and Paradigms (GSA) is a beautiful compendium of work containing extensive and indispensable reference resources in the form of hotspot, tectonic, volcano, and tomographic maps and cross sections of Earth. Some chapters outline the history of the plume hypothesis and other theories for the genesis of hotspots, and several provide tutorials that will be valuable to students and cross-disciplinary scientists. Other chapters present innovative models and theories for individual localities, volcano genesis processes, and related global observations. Both works will be useful as reference volumes and as texts for advanced undergraduates and graduate students