An oceanic plate being subducted under a continental plate.
Subduction
This phenomenon is called plate subduction and is seen in South America where the Nazca plate is being subducted under the South American plate. The Juan the Fuca plate is being subducted under North American plate.
Magma plumes can form at hotspots in the Earth's mantle, where unusually hot and buoyant rock rises towards the surface, leading to volcanic activity. They can also form at subduction zones where a tectonic plate is being subducted beneath another, causing melting of the mantle wedge above the subducted plate.
it is a chemical interaction started by the water the subducted plate brings down with it which causes melting and forms magma which creates volcanoes
An oceanic plate being subducted under a continental plate.
An oceanic plate being subducted under a continental plate.
Subduction
The Atlantic Plate is being subducted beneath the eastern Caribbean Plate.
Juan De Fuca Plate
North American
The Mariana Trench is a convergent boundary, specifically a subduction zone, where the Pacific Plate is being subducted beneath the Mariana Plate. This results in the trench being the deepest part of Earth's ocean.
This phenomenon is called plate subduction and is seen in South America where the Nazca plate is being subducted under the South American plate. The Juan the Fuca plate is being subducted under North American plate.
Normally a trench develops, marking the area of subduction.
An equal amount of oceanic crust is being subducted at the convergent plate boundaries as is being created at the mid-oceanic ridge.
Magma plumes can form at hotspots in the Earth's mantle, where unusually hot and buoyant rock rises towards the surface, leading to volcanic activity. They can also form at subduction zones where a tectonic plate is being subducted beneath another, causing melting of the mantle wedge above the subducted plate.
A subduction zone is where one plate is being subducted ( pulled down) under another plate, No it is not a plate boundary but it is were it happens. hope this helps