Physical geography Fluvio-glacial Landforms

Question 1

Fluvio-Glacial Landforms definition-(summed up formed)

Answer 1

Landforms produced by the MELTWATER from GLACIERS

Question 2

Fluvio-Glacial Landforms Sandur /Outwash Plain define

Answer 2

An EXTENSIVE gently sloping area of SAND AND GRAVELS that form in FRONT of a GLACIER.

IT results from the OUTWASH of Sediment carried by MELTWATER, Streams and Rivers.

Question 3

Fluvio-Glacial Landforms Sandur /Outwash Plain FORMATION

Answer 3

During a ABLATION Period, meltwater CARRIES SEDIMENT away from SNOUT as GLACIER RETREATS
STREAM DEPOSITS sediment when STREAM LOSES ENERGY
SEDIMENT is SPREAD OUT OVER the OUTWASH PLAIN
deposition of the outwash will be very SEASONAL only during warmer summer months.

Question 4

Fluvio-Glacial Landforms Kames/Definition

Answer 4

Mounds of sediment which are deposited in the PATH of the FRONT of a SLOWLY/STATIONARY GLACIER/ ICE SHEET.
THE SEDIMENT contains SAND AND GRAVELS

Question 5

Fluvio-Glacial Landforms /Kames Formation

Answer 5

ROCKFALL from the valley - FALLS on to the CREVASSES of a GLACIER

During the ABLATION PERIODS SEDIMENT moves further DOWN to the BASE of the GLACIER

when the glaicer has ALMOST MELTED they reach VALLEY BED and depoisted as a MOUND OF SEDIMENT

Question 6

Fluvio-Glacial Landforms/Kames Terraces Define

Answer 6

Also Composed of SAND and Gravel but they FORM ALONG the SIDES of the GLACIER rather than at its SNOUT

Question 7

Fluvio-Glacial Landforms/Kames Terraces FORMATION

Answer 7

PRESURRE between VALLEY SIDES and GLACIER- Promotes Melting due to FRICTION releasing THERMAL ENERGY

This forms SUPRA GLACIAL STREAMS which collect SEDIMENT along the valley

as GLACIER retreats in ABLATION PERIODS MATERIAL is deposited on the VALLEY FLOOR

Question 8

Importance of Glacial Meltwater

Answer 8

Meltwater helps to lubricate the base of a glacier and overcome friction allowing the glacier to SLIP FORWARD periodically

Meltwater helps TRANSPORT moraine beneath the Ice where it provides tools for GLACIAL EROSION

If it REFREEZES meltwater can bind the base of the glacier to Broken Rock fragments-plucking

Meltwater will also ERODE channels and form DISTINCTIVE DEPOSITIONAL features-both in front and beneath the ice.

Question 9

Fluvio-Glacial Landforms-Esker definition

Answer 9

An esker is a long SINUOUS RIDGE composed of UNSTRATIFIED SAND AND GRAVEL
laid down by GLACIAL MELTWATER

Question 10

Fluvio-Glacial Landforms-Esker Formation

Answer 10

SUB-GLACIAL STREAMS FORM due to INCREASED PRESSURE -from BASE of Glacier

during ABLATION PERIODS when GLACIER RETREATS
SUB GLACIAL STREAMS STOP FLOWING due to REDUCED pressure from GLACIER

SEDIMENT is DEPOSITED in SUB-GLACIAL TUNNELS