Are there volcanoes at Divergent?
Volcanoes are most common in these geologically active boundaries. The two types of plate boundaries most likely to produce volcanic activity are divergent plate boundaries and convergent plate boundaries. At a divergent boundary, tectonic plates move apart.
Do the diverging boundaries of the oceans have volcanoes?
Most active divergent plate boundaries occur between oceanic plates and exist as mid-ocean ridges. Diverging boundaries also form volcanic islands, which occur when plates move apart to produce gaps that magma rises to fill.
Do volcanoes occur on convergent or divergent?
Deep ocean trenches, volcanoes, island arcs, submarine mountain ranges, and fault lines are examples of features that can form along plate tectonic boundaries. Volcanoes are a type of feature that forms along convergent plate boundaries, where two tectonic plates collide and one moves beneath the other.
How does subduction at divergent plate boundaries lead to volcanoes?
Subduction at convergent plate boundaries leads to melting and volcanoes. Convergent plate boundaries along the Pacific basin, so volcanic arcs edge the area. Melting at divergent plate boundaries is due to release of pressure. At mid-ocean ridges, the seabed is pulled apart and new seabed is created.
Where do volcanoes erupt in the middle of the ocean?
Volcanoes erupt at mid-ocean ridges, such as the Mid-Atlantic Ridge, where seafloor spreading creates new seafloor in rift valleys. Where a hotspot is located along the ridge, such as at Iceland, volcanoes grow high enough to create islands (Figure 5).
How are seafloor spreading and rift valleys related?
Divergent boundaries are the site of seafloor spreading and rift valleys. Seafloor spreading is the process of magma welling up in the rift as the old crust pulls in opposite directions. Cold seawater cools the magma and creates new crust.
What kind of volcanoes are under the North American plate?
Subduction of the Juan de Fuca Plate beneath the North American Plate creates the Cascade Volcanoes. Subduction of the Pacific plate under the North American plate in the north creates the Aleutian Islands volcanoes.
Now that you know what plate tectonics is and what the structure of the earth is, we can look at the movement of the plates. Divergent zones are explained in…