"Orogenic belts" are associated with subduction zones, which consume crust, produce volcanoes, and build island arcs. Eastern Australia is composed of distinct orogenic belts, collectively referred to as the Tasmanides. These long tracts of highly deformed rock were created as a result of tectonic plate movement and are younger than the Gondwana western portion of the Australian continent. When tectonic plates collide, something has to give; usually one continent dives beneath the other (subduction zone) and is melded into the earth's mantle. This collision results in huge pressure and deformation of rocks and landscapes.