Glacial Erosion Landforms - Valley Floor Landforms Flashcards Preview

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Flashcards in Glacial Erosion Landforms - Valley Floor Landforms Deck (10)
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1

What happens when a glacier flows over the land?

It flows over areas of hard rock and areas of soft rock.

2

What is the soft rock like?

Less resistant.
Glacier will carve out a deeper trough.

3

When the glacier have retreated what happens?

Water will collect in the deeper area and create a long thin lake called a ribbon lake

4

Where are a lot of ribbon lakes found?

English Lake District.

5

What happens to the areas of hard rock?

It is left behind called rock steps.

6

What happens if the glacier hits a resistant outcrop of rock?

It will flow over and around it.

7

The resistant outcrop becomes what?

A rock mount smoothed by abrasion from the glacier.

8

What is a roches moutonnee?

Steep jagged faces created by plucking on the lee side and a gradual incline which is smoothed and polished by abrasion on the other en

9

The roches moutonne may have striations on it indicating what?

The direction of glacier movement.

10

What are crag and tail?

Larger than roche moutonnee.
Opposite of roche moutonnee.