coastal processes - salt crystillisation etc Flashcards

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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

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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

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3
Q

what is wetting and drying?

A

rocks expand and contract

this results in formation of cracks and which weakens the rock

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4
Q

what is solution?

A

involves the dissolving of soluble minerals
enlarges joints and rocks
creating pitted and jagged rock surfaces

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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

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