This advanced undergraduate textbook provides a thoroughly modern overview of plate tectonics and is the perfect resource for a capstone geology course. It presents plate tectonics as a multifaceted, interdisciplinary theory that unites many different geological observations and processes into a harmonious model so that readers grasp how the outer part of our planet works in relation to the deep interior. Supported by clear prose, helpful analogies, and stunning colour imagery, readers will gain an in-depth understanding of how and why plates interact to produce different topography, rock assemblages and deformation features along plate boundaries. Written by an author pairing renowned for their research, teaching, and textbook writing experience, this text covers necessary ground for a single-semester course without overwhelming readers and offers a truly accessible introduction to quantitative topics. Student-friendly features chart clear paths through every chapter and a rich suite of online resources bring plate tectonics to life.