Flamborough Head Flashcards
distance and subsection of coastline
60km and 1d
what type of rock strata
discordant
what is flamborough head
chalk headland
how fast does soft rock erode
shale = 1.8m/yr
how fast does hard rock erode
limestone = 0.1m/yr
fetch
1500km
lsd direction
north to south
features of cliffs at flam and changes over time
-chalk
- 20/30m
- the top of the cliff is made of till deposited from glacial period (18,000 years ago) and has been eroded by mass movement to 40 degrees.
- the cliff will collapse over a long time period
example of a bay
filey bay
when were rocks formed
jurassic period
sources of sediment
- river esk - minimal amount (highly managed)
- erosion of chalk, limestone and shale cliffs
- material moved onshore at last ice age
physical factors
sources of sediment
wave energy
geology
example of shore platform
robin hoods bay
example of stacks
green stacks pinnacle
example of geo
huntsmans leap
peak wave height
4m
examples of inter-relations
- headland and bay - Filey brigg and Filey bay
- rivers and landforms - river esk and Robbin hoods bay
- sediment supply from north to south through lsd - saltburn to Filey bay
- wave cut platform and cliffs - Robbin hoods bay - when long enough it can stop erosion - flat (3 degrees) but more effective at low tide than high tide
short term changes at flamborough head
- cliff collapse but caused by long term erosion
seasonal: - increased precipitation = increased sediment in winter
- beach profile goes in summer = wider and higher
- more storms = wind and wave energy increase in winter
long term changes at flamborough head
- offshore sediment bought up over 9000 years (flandrian transgression)
- wave cut platforms - eroded over millennia
- sediment from jurassic period
- end of glacial maximum (15,000 years ago) - till deposited on coastline
- erosion of arch - stack - stump as chalk 0.1m/yr
