I think you are writing about geological plates. These are sections of the earth's crust which move very slowly in time as the underlying convection currents in the molten interior push them. The edge of a plate is a plate boundary, and it might sink below a neighbouring edge or squeeze up to the surface at such a place. Sometimes plates grind causing earthquakes.
the plate boundary at the mount is a colliding plate boundary
The boundary where a trench can be found is called a convergent plate boundary. It can also be termed a destructive plate boundary in plate tectonics.
The plate boundary between the Eurasian plate and African plate.
It is a convergent/destructive plate boundary.
Convergent boundary Convergent boundary
Divergent Boundary Plate BoundaryDivergent Boundary Plate BoundaryDivergent Boundary Plate BoundaryDivergent Boundary Plate BoundaryDivergent Boundary Plate BoundaryvDivergent Boundary Plate BoundaryDivergent Boundary Plate BoundaryDivergent Boundary Plate BoundaryDivergent Boundary Plate BoundaryDivergent Boundary Plate BoundaryDivergent Boundary Plate BoundaryDivergent Boundary Plate Boundary
the plate boundary at the mount is a colliding plate boundary
Convergent plate boundary, divergent plate boundary and strike-slip (transform) plate boundary.
Divergent plate boundary
convergent plate boundary
It is called a divergent plate boundary.
Divergent plate boundary: Mid-Atlantic Ridge. Transform plate boundary: San Andreas Fault.
divergent plate boundary- a boundary where two plates move apart from each other. convergent plate boundary- a boundary where two plates move towards each other so that one plate can sink beneath the other. transform plate boundary- a boundary where one plate slips along side another plate.
A convergent plate boundary.
The boundary where a trench can be found is called a convergent plate boundary. It can also be termed a destructive plate boundary in plate tectonics.
It is a destructive plate boundary ;)
A transform plate boundary