Thinning of the crust occurs at points on the Earth's surface where tectonic plates are separating. This initially causes normal faulting to occur which leads to the creation of down thrown blocks or valleys known as "grabens". These are bounded on either side by "horst" structures.
If the separation of the plates continues, then a rift valley will form, along with associated thinning of the lithosphere and the onset of volcanism. Continued riftying will ultimately form a new oceanic spreading centre.
This process is currently occurring in the East African Rift zone.
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Ridges, called spreading centers, happen where two plates move away from each other. As the plates separate, molten mantle material (magma/melted rock) flows up to fill the void.
When the plates separate water fills in the cracks, this leaves trenches ie. (Mariana Trench) the deepest part of the ocean approx. 7mil below sea level.
When the plates separate water fills in the cracks, this leaves trenches ie. (Mariana Trench) the deepest part of the ocean approx. 7mil below sea level.
what happens to your liscense plates after reposesion in N.Y.
Plates pulling apart.
Magnetic
tectonic plates
no flex zone
On the fault line in California
when two plates separate magma rises and cools to form a volcano
nothing happeneds
Divergent