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Why do composite volcanoes occur at the boundary between oceanic crust and continental crust?
Wiki User
∙ 13y ago
The simple answer:
Oceanic crust is more dense than the continental crust, so it goes under as the two plates ram into each other. (This is called subduction)
This submerged crust melts into magma, and collects into a large pool under the continental plate where it went under. The pool of magma forces its way up to form a volcano, which sits in front of us and blows when least expected.
The whole process takes a very long time.
Also, it only happens in convergent boundaries.
Wiki User
∙ 13y ago
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What Type of plate boundary exists between Indian and Asia?
A Collision plate boundary, where two continental plates that are the same in density and thickness, push against each other forming fold mountains and crumble zones. This causes Earthquakes from the pressure and stress but not volcanoes.
The shelf edge is the boundary between the continental shelf and the?
continental slope
What plate boundary are volcanoes formed at?
Volcanoes can form at three places-1. Divergent boundaries2. Convergent boundaries (oceanic-oceanic and oceanic-continental)2. Above hot spots
Which portion of the continental margin serves as a boundary between the oceanic crust and continental crust?
continental slope
What is the difference between a convergent boundary between an oceanic plate and a continental plate and a convergent boundary between two continental plates?
A convergent boundary between two continental plates causes both plates to crumple to form fold mountains e.g. the HimalayasA convergent boundary between a continental and an oceanic causes one to rise above the other. Granite is less dense than basalt, so the continental plate rises above the oceanic plate. This also forms mountains, like the Andes.
What Type of plate boundary exists between Indian and Asia?
A Collision plate boundary, where two continental plates that are the same in density and thickness, push against each other forming fold mountains and crumble zones. This causes Earthquakes from the pressure and stress but not volcanoes.
What is the difference between hotspot volcanoes and volcanoes formed at plate boundaries?
hotspot volcanoes are formed away from the edge of plate boundaries. Plate boundary volcanoes are near a plate boundary
The shelf edge is the boundary between the continental shelf and the?
continental slope
What is the difference between a composite and shield a Volcano?
Shield Volcanoes erupt less violently and flows further then composite volcanoes. A composite volcano erupts more violently.
What plate boundary are volcanoes formed at?
Volcanoes can form at three places-1. Divergent boundaries2. Convergent boundaries (oceanic-oceanic and oceanic-continental)2. Above hot spots
What is the boundary between the oceanic crust and the continental crust known as?
Continental margin
Which portion of continental Margin serves as a boundary between the oceanic crust and the continental crust?
continental slope
Which portion of the continental margin serves as a boundary between the oceanic crust and the continental crust?
continental slope
Which portion of the continental margin serves as a boundary between the oceanic crust and continental crust?
continental slope
What is the patteren between Ayelu and Likaiu volcanoes?
both volcanoes are located near the African plate boundary
The boundary between continental crust and oceanic crust occurs at the base of the?
Continental Slope
What is the Steep boundary between the continental landmass and the ocean basin?
the answer to the question is: continental slope
