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magma forms in mantle above slab
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Volcanoes are able to form in several different plate-tectonic settings?
The type of tectonics where volcanoes occur are continental rift volcanism, hot spot, and continental volcanic arc. The other tectonics are subduction zones and rift valleys on a continental crust.
These are formed when oceanic plates slide under continental plates?
When oceanic plates slide under continental plates they form subduction zones. Subduction zones always occur at convergent boundaries where one plate slides beneath another plate.
How volcanes distributed?
Volcanoes form along convergent boundaries known as subduction zones. Convergent boundaries form where oceanic lithosphere descends beneath continental crust. When the two plates collide convergence occurs, while volcanoes form along the zone.
What type of plate movement causes tsunami's?
convergence plate boundary, where tectonic plates move towards each other and collide, leading to subduction zones which are highly constructive regions of volcanoes. Volcanoes also form at divergent plate boundaries. A good example being the numerous Icelandic volcanoes which have formed over he Mid Atlantic Ridge.
What is a subduction zone volcano?
A subduction zone is an area of tectonic plate collision where the more dense plate subducts, or follows a path underneath, the less dense plate.A subduction zone is the place where oceanic plate margin is being pushed under a continental plate or a less dense oceanic plate. Have a look at the western side of South America (on the pacific coast), see the mountain ranges and volcanoes - these are just inside the edge of the continental plate and are a product of the subduction zone. As oceanic crust gets pushed under or over-ridden by the continental plate edge it melts and gives rise to the volcanoes. These zones also exist where one oceanic crust is pushed under another oceanic crust, the same volcanism results, but as it takes place at sea the result is the formation of underwater volcanoes.
What can form above subduction zones?
I think it would be shield volcanoes because it was it!
Where do large number of volcanoes form?
Volcanoes Form at Active Subduction Zones or in the ring of fire
A composite volcano is most likely to form where?
Composite volcanoes most often form near subduction zones.
What kind of volcanoes form along subduction zones?
Usually composite volcanoes. subduction zone volcanos usually form steep sided composite cones composed primarily of andesite
What rock would probably form if magma that was feeding volcanoes above subduction zones solidified at consideration depth?
Plutonic or intrusive igneous rock
Do composite volcanoes form at subduction?
Usually, yes. Occasionally, though they can form in rift zones or at continental hotspots.
The blank ocean basin is rimmed by the most subduction zones?
The Pacific Ocean basin is rimmed by the most subduction zones. These subduction zones form as one tectonic plate is forced beneath another, creating deep ocean trenches. The Pacific Ring of Fire, which encircles the Pacific Ocean, is known for having numerous subduction zones and is associated with high levels of seismic activity and volcanic eruptions.
How do subduction lead to volcanoes?
Volcanoes form in subduction zones. There, the oceanic crust is subducted, meaning that is slides under the continental crust. When the crust slides below, it melts. Then the melting rock rises up as magma, creating a volcano.
What deep ocean feature form at subduction zones?
Trenches are deep ocean features of subduction zones.
What causes volcanoes in the ring of fire?
The "Ring of Fire" is where the Pacific Plate meets other plates that form the Earth's crust. Each of the Earth's plates is moving (very slowly). In geologic time, the movements of two plates at their intersection causes both volcanoes and earthquakes.
What deep-ocean feature forms at subduction zones?
In a subduction zone an oceanic plate slides under a continental plate or another oceanic plate. The subduction plate introduces water into the mantle, lowering melting temperatures and generating magma. This causes volcanoes, usually stratovolcanoes, to form on the overriding plate. If the overriding plate is continental a mountain range may develop.
What are 5 different places that volcanoes form?
Volcanoes form above plumes or "hot spots." The plate moves over this location, making a chain of volcanoes like Hawaii. Volcanoes also form around subduction zones. One plate moves under another, causing the the edges of the plate to melt making volcanoes, islands, and mountains. Volcanoes can also lie over magma chambers that have lava that leaked from the lithosphere into the crust.
