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Convergent boundaries.
There are two plate boundaries that cause volcanoes. They are the divergent and convergent plate boundaries.
Fire Lava Ash Grey Red Goo Unexpected Serious explosive rumbling powerful For inactive volcanoes: inactive dormant
Most calderas are associated with subduction zones, a kind of convergent plate boundary. However, a few calderas, such as the ones at Yellowstone, are associated with hot spots rather than plate boundaries.
plates moving together
It can cause earthquakes, volcanoes, oceanic trenches, mountains, tsunamis, and subduction.
Convergent boundaries.
There are two plate boundaries that cause volcanoes. They are the divergent and convergent plate boundaries.
It collides with the upper mantle that forms volcanoes with violent eruptions
Stratovolcanoes are usually found along convergent plate boundaries where an ocean plate is pushed under another ocean plate or a continental plate (subduction zone). If you are referring to convergent boundaries in which neither plate is subducted but both are pushed up to form mountains, then my answer would have to be that it is very rare for a volcano to form at this type of boundary.
Convergent, divergent, and, although not a plate boundary, they also occur from hotspots.
Fire Lava Ash Grey Red Goo Unexpected Serious explosive rumbling powerful For inactive volcanoes: inactive dormant
Most calderas are associated with subduction zones, a kind of convergent plate boundary. However, a few calderas, such as the ones at Yellowstone, are associated with hot spots rather than plate boundaries.
Divergent, since when the plates split, magma reaches the surface. Convergent, since it is where volcanoes are typically formed. Transform, since trough any crack magma can come out too.
plates moving together
Convergent plate boundaries, and in particular, oceanic plate to continental plate collisions, may pose the most risk because of the possibility of earthquakes and volcanic eruptions.
The most violent volcanic eruptions are found in destructive/convergent plate boundaries. 80% of the world's active volcanoes are found occur along destructive boundaries. Acid-lava and composite volcanoes also cause the most violent eruptions as the lava is viscous and the opening of the volcano is sometimes blocked by hardened lava, causing a huge massive explosion during the eruption.