Sea Stack Formation
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From crack to cave to arch to stack.
This is what it looks like at the beginning.
It starts with a crack in the rock. Hydraulic action then widens the crack.
This becomes a cave. Hydraulic action keeps on detatching material which makes the cave wider.Abrasion, attrition and solution also take place.
The process keeps happening until it forms a sea arch. They are formed very slowly overtime.
When the sea arch becomes too wide to support its own weight it collapses. Leaving us with a tall stack.
As erocion continues it undermines the base until it collapses forming a stump.
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