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Q: What type of crust is subducted at some convergent boundaries?
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How do convergent boundaries add material to earths surface?

At convergent boundaries some mantle material can melt and rise through the crust, forming volcanoes.


What occures when a continental and oceanic plate collide?

At some convergent boundaries, an oceanic plate collides with acontinental plate. Oceanic crust tends to be denser and thinner thancontinentalcrust, so the denser oceanic crust gets bent and pulled under, or subducted, beneath the lighter and thicker continental crust. This forms what is called a subduction zone.


Where are the most plate bounderies?

Fault lines.


What happens along some convergent plate boundaries when both landmasses are of low density?

Neither plate subducts and the crust thickens and uplifts.


How are volcanoes formed by convergent plate boundaries?

Where one convergent plate is subducted under another, the sinking slab (which is full of wet sediments and organic remains) is heated and some of it melts to form magmas which migrate upwards to form volcanoes on the edge of the overlying plate.


What are convergent zones?

A2. A Convergent Boundary is where two Tectonic Plates come together.They are Destructive boundaries, for some of the plates are consumed. The Himalayas are an example where the plates converge, and build a mountain range between them. There still will be some subduction.The Andes of S America are where the pacific Plate is being subducted beneath the S American Plate.


Is a stratovolcano a divergent volcano?

No. Stromboli is associated with a subduction zone, which is a convergent boundary.


What is convergent movement?

Convergent movement refers to the coming together or merging of two or more things towards a common point or direction. In biology, it specifically describes the evolution of similar traits in unrelated species in response to similar environmental pressures. This phenomenon can lead to analogous structures that serve the same function but have different evolutionary origins.


Why are most volcanoes located near a fault?

Most volcanoes form at either convergent or divergent plate boundaries. Volcanoes at convergent plate boundaries form when one plate slides under another, taking seawater with it. This causes the rock in the mantle to melt as the melting point drops. This new magma can rise to form volcanoes.At divergent plate boundaries the crust is thing, which lowers pressure on the mantle, causing some material to melt.


What type of structure typically forms at a divergent boundary?

Three main structures form by convergent boundaries. There are three types of convergent boundaries, oceanic-oceanic, oceanic-continental, and continental- continental. Oceanic to oceanic boundaries form volcanic islands, because the two plates come together, one crust goes under, the other forms a mountain, and the lava from the crust that went under the other one goes through the mountain, making it a volcano. Oceanic- continental convergent boundaries form volcanoes, the continental crust form the mountain, the oceanice goes under and makes the lava that goes up through the mountain and makes a volcano. continental to continental boundaries form mountains. since both crusts are of the same density, they both shoot up and form a mountain.


What are some similarities with convergent and divergent boundaries?

Some similarities between convergent and divergent boundaries are that both create faults that are capable of producing earthquakes; both are tectonic plates; and both are part of the lithosphere.


What type of plate boundary causes a reverse fault?

In an ideal world this would be a margin that involves some element of compression, so you're looking at a compressional (orogenic) or subducting margin. Anywhere where the crust is thickened generally involves reverse, also known as thrust, faulting.