A continental oceanic collision.
Sea floor is created at spreading ridges and destroyed.
New seafloor is formed at ridges and destroyed at trenches.
At the spreading center liquid rock called basaltic magma rises from the earth s mantle as it upwells beneath the spreading axis.
In 1962 hess proposed that the seafloor was created at mid ocean ridges spreading in both directions from the ridge system.
As the magma is thrust up and hardens it forms new crust and the ocean floor on both sides of the mid ocean ridge move outward.
The mid atlantic ridge for instance separates the north american plate from the eurasian plate and the south american plate from the african plate the east pacific rise is a mid ocean ridge that runs through the eastern pacific ocean and separates the pacific plate from the north american.
Spreading rates determine if the ridge is fast intermediate or slow.
The rate at which new oceanic lithosphere is added to each tectonic plate on either side of a mid ocean ridge is the spreading half rate and is equal to half of the spreading rate.
The andes mountains are a famous example of.
Start studying sea floor spreading.
This boundary is connected with sea floor spreading.
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Magma is pushed up through cracks in the crust along the mid ocean ridge.
Sea floor spreading has to do with the crust forming at ocean ridges and being destroyed at deep sea trenches.
Seafloor spreading occurs along mid ocean ridges large mountain ranges rising from the ocean floor.
East africa and the basin and the range province of the united states are example of a.
Rifting occurs at oceanic spreading ridges but not within continents because continents are so thick and strong.
Spreading rate is the rate at which an ocean basin widens due to seafloor spreading.
During the process of seafloor spreading.
It was created on the sea floor.
When the magma hardens it forms new oceanic crust that becomes welded to the original crust.
Sea floor is created at spreading ridges and destroyed.
Sea floor spreading occurs when the sea floor spreads apart along divergent boundaries and forms the mid ocean ridge.
