EQ3 Keywords Flashcards
What are the main glacial processes?
Erosion, entrainment, transport, deposition
These processes describe how glaciers shape the landscape.
Name three macro features formed by glacial processes.
Cirque, aréte, pyramidal peak
These features are significant landforms created by glacial activity.
What is a u-shaped valley?
A valley shaped by glacial erosion
U-shaped valleys are characterized by their broad, flat floors and steep sides.
What are stoss and lee features?
Features that are formed by the differential erosion of bedrock by glaciers.
e.g.Whalebacks, roche moutonnées
What are micro features associated with glacial activity?
Striations, chattermarks, crescentic gouges
These features indicate past glacial movement and the direction of ice flow.
Fill in the blank: Freeze thaw weathering is a type of _______.
Glacial sub aerial process
What types of till are there in glacial deposition?
Lodgement till, ablation till, flow till
Each type of till has distinct characteristics based on its formation process.
What are some examples of depositional landforms?
Drumlins, lateral moraines, medial moraines, terminal moraines, recessional moraines, hummocky moraines
These landforms result from the accumulation of glacial debris.
What is the difference between surface melting and basal melting?
Surface melting occurs on the glacier surface; basal melting occurs at the glacier base
Both processes contribute to glacial retreat and movement.
What are the key fluvioglacial processes?
Erosion, deposition (sorted, stratified)
These processes occur in glacial meltwater environments.
Name three fluvio glacial features.
Esker, Kame terrace, Kames
These features are formed by the deposition of sediments carried by meltwater.
What is solifluction?
A periglacial process involving the slow movement of water-saturated soil down a slope
This process is common in areas with freeze-thaw cycles.
What are ice wedge polygons?
Landforms created by the freezing and thawing of ground ice
These polygons are characteristic of periglacial landscapes.
What is a closed system pingo?
A type of periglacial landform formed by the accumulation of ice in a closed system
Closed system pingos form in areas with permafrost.
