T3 - Glaciated Landscapes and Change Flashcards
(15 cards)
1
Q
Crib - Periglacial Processes (6)
A
- Nivation
- Frost Heave
- Freeze thaw weathering
- Solifluction
- High winds
- Meltwater erosion
2
Q
Crib - Periglacial Landforms (4)
A
- Ice wedges
- Patterned ground
- Pingos
- Loess
3
Q
Crib - Process of Accumulation (4)
A
- Direct snowfall
- Avalanches
- Wind deposition
- Hoar frost
4
Q
Crib - Process of Ablation (5)
A
- Melting
- Sublimation
- Calving
- Evaporation
- Avalanching
5
Q
Crib - Important processes for the movement of a glacier (3)
A
- Basal sliding
- Internal Deformation
- Relegation Creep
6
Q
Crib - Factors that control the rate of movement (5)
A
- Altitude
- Slope angle / gradient
- Ice thickness
- Bedrock Permeability
- Variations in mass balance (ice temp, rates of ablation and precipitation)
7
Q
Crib - Types of Glacial Erosion (6)
A
- Quarrying
- Plucking
- Abrasion
- Crushing
- Basal melting
- Combined with subaerial freeze thaw and mass movement
8
Q
Crib - Upland Erosional Features (7)
A
- Corries
- Arêtes
- Pyramidal peaks
- Glacial troughs
- Truncated Spurs
- Hanging Valleys
- Ribbon Lakes
9
Q
Crib - Landforms due to ice sheet scouring (4)
A
- Roches Moutonnées
- Whalebacks
- Knock and lochan
- Crag and tail
10
Q
Crib - Reasons for Glacial Deposition (3)
A
- When velocity is reduced
- When ablation increases
- When they become overloaded with debris
11
Q
Crib - Formation of Ice Contact Depositional Features (6)
A
- Erratics
- Medial moraines
- Lateral moraines
- Recessional moraines
- Terminal moraines
- Drumlins
12
Q
Crib - Formation of Lowland Depositional Features (2)
A
Till plains:
- Logement till
- Ablation till
13
Q
Crib - Formation of Fluvio-Glacial Ice Contact Features (3)
A
- Kames
- Eskers
- Kame terraces
14
Q
Crib - Fluvio-Glacial Proglacial Features (4)
A
- Sandurs
- Pro-glacial Lakes
- Meltwater Channels
- Kettleholes
15
Q
Crib - Different Characteristics between Glacial and Fluvio-Glacial Deposits (4)
A
- Stratification
- Sorting
- Imbrication
- Grading
