because the plates the mantle would slide under each other hitting the mantle causing the magma to erup causing volcano
subduction zones
PLAINS
They are located at spreading centers in the middle of the ocean. As tectonic plates move apart, magma fills it in and creates ridges and rises which are essentially mountain chains.
True. Reference: http://www.studystack.com/flashcard-303839
At divergent boundary, there is a mid ocean ridge where the most recent material is still slightly lighter then the chilled product. This slight elevation soon disappears as the plates move away from the boundary.
subduction zones
Both subduction zones and spreading centers.
Volcanoes at spreading centers is referred to as spreading center volcanism. This usually takes place on mid-oceanic ridges where the plates diverge.
At spreading centers.
These ridges are spreading centers or divergent plate boundaries
Microtubule producing centers are most closely associated with?
Spreading centers.
1. New sea-floor is created by the upwelling of magma at mid-ocean spreading centers; old ocean floor is destroyed by subduction at deep sea trenches. 2. The area is a subduction zone. Magma from underground comes up and destroys that crust. That crust is then recycled and the magma cools and hardens. That creates new land, that creates the trenches. Seafloor spreading is in the ocean and happens with convection currents. That is the relationship between. 3. As new seafloor is formed at mid-ocean ridges, the old seafloor is pushed down into trenches at subduction zones.
It is the mid-ocean ridges.
It is a center at the bottom of the ocean that occurs at mid-ocean ridges
spreading centers
spreading centers