Tectonics (from the Greek word tekton, meaning "builder")'s a field of study within geology concerned generally with the structures within the lithosphere of the Earth (or other planets) and particularly with the forces and movements that've operated in a region to create these structures. Tectonics's concerned with the orogenies and tectonic development of cratons and tectonic terranes as well as the earthquake and volcanic belts which directly affect much of the global population. Tectonic s… (More on Tectonic)