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What type of magmatic activity is characteristic of mid oceanic ridges?

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2009-03-17 03:57:27
2009-03-17 03:57:27

At mid-oceanic ridges, plates are pulled apart in two separate directions. This creates a gap (rift valley), allowing for warm, buoyant magma to rise to the surface and cool. As the magma cools, it creates ridges along the rift valleys. The elevation is caused by the excess amount of newly created, less dense oceanic crust. This crust occupies more volume, which causes it to be higher up than the surrounding, older crust.

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Seafloor spreading. This process includes the splitting of oceanic crust, pushing it aside and building new crust in the middle by magmatic activity.

I think just a oceanic ridges

Along the mid oceanic ridges (sites of crustal generation)

No. Mid oceanic ridges are the places where new oceanic crust are forming.

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When oceanic and oceanic plates diverge it creates mid ocean ridges!

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New oceanic crust is created at the mid-oceanic ridges, a divergent plate boundary.

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In the main along the mid oceanic ridges and along oceanic trenches.

Magmatic upsurge from within the earths crust, and plumes.

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Oceanic-oceanic plate divergence, such as that occurring at the mid-ocean ridges.

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oceanic lithosphere sinks at subduction zones but not at mid ocean ridges because at subduction zones the oceanic lithosphere is subducted, or sinks, under another plate. Oceanic Lithosphere sinks at subduction zones which are usually at convergent boundaries, but at mid-ocean ridges the plates are actually separating not coming together

If you mean "what" forms at mid-ocean ridges, the answer is new oceanic crust.

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Matching fossils in separated continents and the growth of oceanic crust at mid-oceanic ridges and destruction of oceanic crust at trenches.

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oceanic lithosphere sinks at subduction zones but not at mid ocean ridges because at subduction zones the oceanic lithosphere is subducted, or sinks, under another plate. Oceanic Lithosphere sinks at subduction zones which are usually at convergent boundaries, but at mid-ocean ridges the plates are actually separating not coming together

Yes. Mid Ocean Ridges create new oceanic crust.

In oceanic ridges and continental rift zones.


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