Tectonic Plate Boundaries

The lithosphere is divided into tectonic plates (im) that move, albeit very slowly, in relation to each other – converging, diverging, riding over/under one another, and sliding past one another.
type of boundary	associated phenomena and structures
converging plates
arc-continent (ocean-ocean)	volcanic island arc, volcanoes, submarine trench, folding and faulting, subduction zone
ocean-continent	submarine trench, magmatic arc, folding and faulting, subduction zone
continent-continent	folding and faulting, orogeny
diverging plates
ocean-ocean	mid-ocean ridges (spreading centers, im, Iceland), volcanoes
continent-continent	rift valleys, volcanoes
subduction zones
arc-continent	volcanic island arcs, very deep earthquakes
ocean-continent	volcanic chains, very deep earthquakes
transform-boundary faults (im)
ocean-ocean	shallow earthquakes, strike-slip faults
continent-continent	shallow earthquakes, strike-slip faults