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Why are hot spot volcanoes more common where the mantle plume underlies an oceanic plate?
Wiki User
∙ 13y ago
The crust of an oceanic plate is generally thinner that the crust of a continental plate.
Wiki User
∙ 13y ago
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Is it true that many volcanoes form near colliding plate boundaries where oceanic crust returns to the mantle?
Yes
Are volcanoes of Hawaii localized above a deep mantle hot spot that are not part of the East Pacific oceanic ridge?
True
What causes an underwater volcanoes?
Underwater volcanoes have several means of formation: so called 'hot spots' in the Earth's mantle in which case magma oozes through the oceanic crust; plate subduction, where the denser oceanic plate moves under the less dense plate and melts upon contacting the mantle, and volcanism created by diverging oceanic plates.
Where is the asthenospher located?
Melted layer of the mantle that underlies the lithosphere
Why isn't new oceanic crust generated along volcanic island arcs?
At a volcanic island arc, an oceanic plate slides into the mantle and thus oceanic crust is destroyed. The volcanoes add material on to of the crust, but to not cause the crust to expand outward.
Why are under water volcanoes more active?
Oceanic plates are much thinner than continental ones. Thus, their surface is closer to the upper mantle, which is where the magma in volcanoes comes from, and it is easier for lava to reach that distance up to form volcanoes.
When an oceanic plate converges with a continental plate .?
When an oceanic plate converges with a continental plate, the oceanic plate slips under the continental one and into the mantle in a process called subduction. The area will be prone to large earthquakes and tsunamis. A chain of volcanoes will form on the continent.
Where do volcanoes create crust?
Definition: Outermost layer of Earth- Plates fit together like a jigsaw puzzle! State: Solid- Lighter crustal plates float on denser mantle Thickness: - Contains: 2types: Oceanic Crust and Continental Crust Oceanic is heavier but thinner than Continental Crust
What happens when continental collides with continental crust?
The oceanic crust is force down into the mantle in a process called subduction. The subducting oceanic plate will introduce water into the hot mantle, causing some of the rock to melt. The molten rock will rise through the overriding continental crust to form volcanoes.
What happens when an oceanic plate converged with a continental plate?
When an oceanic plate converges with a continental plate, the oceanic plate slips under the continental one and into the mantle in a process called subduction. The area will be prone to large earthquakes and tsunamis. A chain of volcanoes will form on the continent.
What is oceanic lithosphere?
The lithosphere is composed of crust and hard upper mantle. The oceanic lithosphere would be hard upper mantle and basaltic oceanic crust.
What is the oceanic lithosphere?
The lithosphere is composed of crust and hard upper mantle. The oceanic lithosphere would be hard upper mantle and basaltic oceanic crust.
