coastal processes - salt crystillisation etc Flashcards
1
Q
what is frost shattering?
A
promoted by the presence of large amounts of water
salt water freezes
rocks become severely cracked by process
2
Q
what is salt crystallization?
A
salt water evaporates and forms salt crystals
as the crystals grow they exert pressure in the rock causing them to break away
3
Q
what is wetting and drying?
A
rocks expand and contract
this results in formation of cracks and which weakens the rock
4
Q
what is solution?
A
involves the dissolving of soluble minerals
enlarges joints and rocks
creating pitted and jagged rock surfaces
5
Q
what is chemical weathering?
A
tends to occur where there is alternate wetting and drying and/or towards the bottom of the slopes where material and moisture often accumulate
