LC Question (2011 HL)
Name one landform on the Ordnance Survey map that was
formed by fluvial or glacial or coastal processes and give a six
figure grid reference for its location.
Describe and explain with the aid of diagram(s) the processes
involved in the formation of this landform.
Named landform 2 marks
Six figure grid reference 2 marks
Process named 2 marks
Labelled diagram 4 marks graded
Explanation 10 x SRPs
Give credit for extra labelling in diagram(s) from explanation
Feature or process can be starting point
Max 2 SRPs if description only of landform.
Basal flow – weight of ice causes layer closest to ground to
melt – same process used by ice skaters – meltwater acts as a
Plastic Flow & Rotational Slip
Plastic flow – Ice melts around a specific object (like a large
boulder) and the Glacier flows around it
Rotational slip – ice “rotates” around a central point – like a
child on a swing. Can also be seen in mass movements (e.g.
Cirque or Corrie Glacier – a build up of ice high up in a hollow
(corrie) in the mountains.
Valley Glacier – when the ice build up in the corrie is too great,
the ice spills out and flows downhill as a valley glacier
Piedmont Glacier – when two or more Valley Glaciers meet
Glacial Deposits and Fluvioglacial Deposits
First let’s do the Glacial Deposits
Boulder Clay Page 146
Moraine Page 147
Drumlin Page 148
Erratic Page 149
The glaciation of Ireland P.151
2 of Europe’s 4 Major Ice Ages Reached Ireland
175,000 – 100,000 Years ago: Munsterian Ice Age
70,000 – 10,000 Years ago: Midlandian Ice Age
The ice sheets that spread over Ireland had the effect of
“freezing up” the seawater – as a result water levels dropped.
This resulted in Ireland, Britain and Europe joined together as
one large landmass
When the ice sheets melted two things happened
The Sea level rose
The land rose (as it was not being “pushed down” by ice any
This resulted in a unique landscape