Flashcards in Glacial Transport and Deposition Deck (26)
What do glaciers do?
Transport and deposit material.
Glaciers can move material such as what?
Glaciers can move material such as rocks and earth over where?
The movement of material over large distances is called what?
The material is frozen in the glacier and what happens to it?
Carried on its surface.
Pushed in front of it.
What happens during the process bulldozing?
Ice pushes loose material in front of it.
When the ice carrying the material melts what happens?
The material is dropped on the valley floor.
What is it called when material is dropped on the valley floor?
When does deposition also occur?
When ice is overloaded with material.
The dropped material makes what?
Land forms such as moraines and drumlins.
How are glacial deposits different to river deposits?
Because glacial deposits aren't sorted by weight.
What do glaciers deposit material as?
Different types of moraine.
What are moraines?
They are landforms made out of material dropped by a glacier as it melts.
How many types of moraines are there?
4 different types.
Name the 4 types of moraines?
What is lateral moraine?
A long mound of material deposited where the side of the glacier was.
What is medial moraine?
A long mound of material deposited in the centre of a valley where 2 glaciers met.
What join together during medial moraine?
2 lateral moraines.
What are terminal moraines?
They build up at the snout of the glacier when it remains stationary.
During terminal moraines what is it deposited as?
What is ground moraine?
Thin layer of material deposited over a large area as a glacier melts.
What can material be deposited as?
What are drumlins?
Elongated hills of glacial deposits.
The largest drumlins can be what size?
Over 1000m long.
What is the appearance of a drumlin?
Round, blunt and steep at the upstream end.
Tapered, pointed and gently sloping at downstream end.