Fluvioglacial landscapes

Question 1

Meltwater channels

Answer 1

Melt water channels are:
Highly erosive
V shaped
Deep
Steep sides
Sinuous (windy)
Water may flow uphill
Supraglacial
Englacial
Subglacial

Question 2

Crevasse Kames

Answer 2

Crevasse kames
* Material carried and deposited by meltwater falls down cracks in the ice
* When the ice melts material carried by meltwater into crevasses, is deposited on the valley floor
–> round/sorted material = fluvioglacial

Question 3

Kame terrace

Answer 3

• Ice marginal lakes form on the edge of glaciers and can get infilled with deposited material
• Deposited material left on valley side when ice melts - can be confused with lateral morraine

Question 4

Delta Kame

Answer 4

Meltwater streams which flow into ice marginal lakes which slow down when entering the lake drop off material, forming a delta which is sorted and rounded material.

Question 5

Eskers

Answer 5

Formed from supraglacial, englacial, and subglacial meltwater streams which deposited rounded sorted material. Eskers are the linear feature which marks the course of the meltwater stream

Question 6

Outwash plain (Sandur)

Answer 6

Found at the glacier’s snout. It is a dynamic landscape and are seasonal. Moew meltwater streams in the summer. Fluvioglacial so material is rounded and sorted and covers a flat area.