convergent boundaries

• At an oceanic-continental convergence, the denser oceanic crust is pushed down into the mantle by the continental crust.
• Subduction zones are found at oceanic-continental or oceanic-oceanic convergences.
• The subduction zone is the area where two tectonic plates meet, with one plate being forced beneath the other.
• The subduction zone forms at the boundary between two tectonic plates where one plate dives beneath another.
• The subducting plate melts as it descends due to high temperatures and pressures.
• Subduction zones are found along most converging plate margins.
• When oceanic lithosphere collides with another oceanic lithosphere, it can be destroyed through melting and formation of new magma.
• As the melted material rises towards the surface, it forms magma chambers beneath volcanoes.
• Oceanic lithosphere that sinks below the Earth's surface is called the slab.
• When oceanic lithosphere collides with continental lithosphere, the denser oceanic lithosphere sinks below the less dense continental lithosphere.
• As the slab descends deeper into the mantle, it heats up due to friction and pressure from the overlying plate.
• When two plates collide, the denser plate sinks below the less dense plate.
• As the denser plate descends, it melts due to friction and heat from the Earth's interior.
• Convergence occurs when two lithospheric plates move towards each other.
• In this case, the continents may be pushed together but not destroyed.
• Continental-continental collision results in neither side being subducted.
• The type of convergence depends on whether both plates are made of oceanic crust or one is oceanic and the other is continental.
• Volcanism occurs when magma reaches the surface and solidifies.
• Volcanism occurs at destructive margins when molten rock (magma) erupts onto land.
• The molten rock generated by subduction is known as magma.
• Subduction zones are characterized by deep trenches where sediments accumulate on the sea floor.
• The sinking plate is known as the subducting or downgoing plate, while the other plate is referred to as the overriding or upper plate.
• Destructive plate margins have frequent earthquakes caused by tectonic plates grinding against one another.
• At this point, the slab begins to melt as it encounters higher temperatures and pressures.
• As the oceanic slab sinks deeper into the Earth's interior, it heats up and eventually melts, forming magma that rises back towards the surface.
• Melting of the slab releases water vapor, which contributes to the formation of clouds and rainfall on land.
• Hotspot volcanoes occur when magma rises directly from the asthenosphere without being influenced by plate motion.
• Volcanoes can be found at destructive plate margins, constructive plate margins, and hotspots.
• This process creates an area with low density called a plume, which can cause volcanoes to form above it.
• This process creates volcanoes along destructive plate margins.