Geo coasts 2B.1

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  • Created by: kevin495
  • Created on: 26-02-20 20:13
What is the area on the littoral zone which is above high tide and only affected by waves during high tide?
backshore.
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where on the littoral zone do wave processes occur between high and low tides?
foreshore.
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What are inputs?
rivers, tides, waves.
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what aspects what do you describe when looking at cliff profiles?
height of cliff, angle of cliff face, features.
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what is an example of a rocky/cliffed coastline?
flamborough head, yorkshire.
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what would be the cliff profile for rocky-cliffed coastline dominated my marine erosion?
Steep cliff face, unvegetated, active undercutting, little rocky debris.
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what would be the cliff profile for rock-cliffed coastline dominated by sub-aerial processes?
curved slope profile, lower relief, accumulation of debris.
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what are 2 coastal landscapes? give examples for both
sandy - belgian coastline (68km), estuarine - limington in hampshire.
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what are 3 characterisitcs for coastal plain landscapes?
low lying, low relief, low energy.
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What process occurs as a result of these characteristics (previous slide)
gravity settling.
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coastal plains are maintained in a state of what?
dynamic equilibrium.
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what is coastal accretion and how does it occur?
it is when the beach is built up when the inputs are greater than the outputs.
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what is a primary coastline?
coastline dominated by land based processes such as deposition.
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what is a secondary coastline?
coastline dominated by marine erosion or depostion.
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what is an emergent coastline?
coastline that is rising relative to sea level due to tectonic uplift.
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what is an submergent coastline?
coasts being flooded by the sea due to rising sea levels.
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what is tidal range?
height difference between high and low tide.
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what is meant by macro-tidal?
tidal range of 4+ metres.
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what causes low energy waves?
sheltered coasts with limited fetch and low wind speed.
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what causes high energy waves?
exposed coasts with long fetch facing prevailing winds.
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what 3 things determine the resistance of the rock?
1. how reactive minerals in rock are to solution 2. whether rocks are clastic or crystalline, 3. the degree to which rocks have cracks, fractures and fissures.
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Application for those three things?
1. calcite found is limestone is weathered by solution, 2. sedimentary rocks are clastic and are cemented together so are less resistant, igneous and metamorphic are crystalline rocks with interlocking crystals so more resistant.
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what is the recession rate for limestone?
1-2cm per year
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Other cards in this set

Card 2

Front

where on the littoral zone do wave processes occur between high and low tides?

Back

foreshore.

Card 3

Front

What are inputs?

Back

Preview of the front of card 3

Card 4

Front

what aspects what do you describe when looking at cliff profiles?

Back

Preview of the front of card 4

Card 5

Front

what is an example of a rocky/cliffed coastline?

Back

Preview of the front of card 5
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