glacial erosion

Announcements
    • Thread Starter
    Offline

    2
    ReputationRep:
    I'm trying to find out factors that affect glacial erosion but I can't seem to find anything online. If anyone can help I would be very grateful!!

    also if anyone knows anything about glacial surface velocity (especially in a graph-like explaining it) I would also love to hear as this also has me quite stuck!!

    thanks in advance
    Online

    3
    ReputationRep:
    (Original post by Jazzy_j_)
    I'm trying to find out factors that affect glacial erosion but I can't seem to find anything online. If anyone can help I would be very grateful!!

    also if anyone knows anything about glacial surface velocity (especially in a graph-like explaining it) I would also love to hear as this also has me quite stuck!!

    thanks in advance
    Hi Jazzy! I'm not sure about the glacial surface velocity, however, a few of the factors affecting the effectiveness of glacial erosion include:

    Climate
    Frequent fluctuations in climate allow freeze thaw weathering to attack the rock each time the glacier retreats. When the glacier advances it can erode the loose rock by plucking. Climate also determines whether the glacier is warm based or cold based. Warm based glaciers move quickly due to water underneath the ice (basal sliding), and therefore the rate of erosion is higher. Cold based glaciers are frozen to their beds, and move very slowly through internal deformation, so little erosion occurs.

    Geology
    Jointed rocks such as granite, sandstone and limestone are more vulnerable to freeze-thaw weathering and plucking than non-jointed rocks. Soft rocks like clay are also easier to erode, and are therefore more vulnerable to glacial erosion.

    Slope gradient
    Steep slopes e.g. in mountainous areas, lead to an increase in ice velocity (the speed at which the glacier moves) due to extending flow, therefore the amount of erosion also increases. On the other hand, gentle slopes e.g. in lowland areas, lead to a decrease in ice velocity and therefore less erosion takes place.

    Ice thickness
    Thicker glaciers have more erosive power than thinner glaciers.

    I hope that helps
    • Thread Starter
    Offline

    2
    ReputationRep:
    (Original post by Leviathan1741)
    Hi Jazzy! I'm not sure about the glacial surface velocity, however, a few of the factors affecting the effectiveness of glacial erosion include:

    Climate
    Frequent fluctuations in climate allow freeze thaw weathering to attack the rock each time the glacier retreats. When the glacier advances it can erode the loose rock by plucking. Climate also determines whether the glacier is warm based or cold based. Warm based glaciers move quickly due to water underneath the ice (basal sliding), and therefore the rate of erosion is higher. Cold based glaciers are frozen to their beds, and move very slowly through internal deformation, so little erosion occurs.

    Geology
    Jointed rocks such as granite, sandstone and limestone are more vulnerable to freeze-thaw weathering and plucking than non-jointed rocks. Soft rocks like clay are also easier to erode, and are therefore more vulnerable to glacial erosion.

    Slope gradient
    Steep slopes e.g. in mountainous areas, lead to an increase in ice velocity (the speed at which the glacier moves) due to extending flow, therefore the amount of erosion also increases. On the other hand, gentle slopes e.g. in lowland areas, lead to a decrease in ice velocity and therefore less erosion takes place.

    Ice thickness
    Thicker glaciers have more erosive power than thinner glaciers.

    I hope that helps
    Thank you so much!! you've really helped me
    Online

    3
    ReputationRep:
    (Original post by Jazzy_j_)
    Thank you so much!! you've really helped me
    You're welcome
 
 
 
Write a reply… Reply
Submit reply

Register

Thanks for posting! You just need to create an account in order to submit the post
  1. this can't be left blank
    that username has been taken, please choose another Forgotten your password?
  2. this can't be left blank
    this email is already registered. Forgotten your password?
  3. this can't be left blank

    6 characters or longer with both numbers and letters is safer

  4. this can't be left empty
    your full birthday is required
  1. Oops, you need to agree to our Ts&Cs to register
  2. Slide to join now Processing…

Updated: September 25, 2016
TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

Poll
Which is the best season?
Help with your A-levels

All the essentials

The adventure begins mug

Student life: what to expect

What it's really like going to uni

Rosette

Essay expert

Learn to write like a pro with our ultimate essay guide.

Uni match

Uni match

Our tool will help you find the perfect course for you

Study planner

Create a study plan

Get your head around what you need to do and when with the study planner tool.

Study planner

Resources by subject

Everything from mind maps to class notes.

Hands typing

Degrees without fees

Discover more about degree-level apprenticeships.

A student doing homework

Study tips from A* students

Students who got top grades in their A-levels share their secrets

Study help links and info

Can you help? Study help unanswered threadsRules and posting guidelines

Sponsored content:

HEAR

HEAR

Find out how a Higher Education Achievement Report can help you prove your achievements.

Groups associated with this forum:

View associated groups
Study resources

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Quick reply
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.