In regions of convergence, one plate can sink under another in a subduction zone, or two colliding plates can form a mountain belt. At divergent ... investigate a plate boundary in New Zealand ...

Four types of plate tectonic activity are demonstrated in this feature. Keep an eye on the map to see where in the world the activity takes place. Also known as spreading boundary, a divergent ...

St. Helens. Most of the subducting plate continues into the mantle, perhaps to reappear much later at a distant divergent boundary.