What happens when the plate in subduction is primarily composed of seafloor material?

When a tectonic plate that is primarily composed of seafloor material undergoes subduction, it is pushed down into the mantle of the Earth. This process occurs because oceanic crust, which is denser than continental crust, is being forced below either another oceanic plate or continental plate at convergent boundaries. The denser seafloor material sinks into the mantle, where it can contribute to the formation of magma and can be recycled back into the Earth's interior.

This process is a key component of plate tectonics and is instrumental in driving geological phenomena such as volcanic activity and the formation of mountain ranges. Subduction zones are often associated with significant geological activity, including earthquakes and the development of deep ocean trenches. The composition of the subducted plate influences the dynamics of the interaction; oceanic plates, being denser, tend to be subducted beneath lighter continental plates or other oceanic plates, resulting in the observed geological features associated with these areas.