Landforms Of Glacial Deposition Flashcards
Terminal moraine
Narrow ridges of us sorted material extending across a valley.
They are mounds of boulders deposited at the maximum advance of the ice.
Recessional moraine.
Series of narrow ridges extended across a valley.
Moraine deposited during a standstill in the ice retreat.
Lateral moraine.
Unsorted material found along the sides of glaciers and glaciated valleys.
Material found along the sides of a glacier or valley as a result of frost shattering.
Medial moraine.
Mounds of material found in the centre of glaciers.
Formed by the meeting of two lateral moraines.
Push moraine.
Unsorted material found across a valley with stones tilted at an angle.
Materials already deposited on the valley floor pushed upwards by a Tempoary ice re-advance.
Drumlins.
Small elongated mounds with a steep end facing up-valley, a streamline shape and found in swarms.
Material deposited by ice when englacial material is too heavy to be carried by the melting glacier.
Erratics.
Rocks which are not native to the area in which they are found in.
Rocks carried by glacier from their source to an area of different rock type.
Kettles.
Small, shallow lake containing stratified material.
Blocks of detached, dead ice left by a melting ice sheet, later surrounded by fluvioglacial material, melts and forms a lake.
Eskers.
A long, marrow winding ridge of sorted material.
Deposited by sub-glacial streams
Kame.
Mounds of sorted material deposited by meltwater along the valley sides or as a delta at an ice front.
Material deposited where meltwater streams are in contact with the ice.
Outwash plain.
Sorted deposits of gravel, sand and clay spread over a lowland area.
Meltwater spreads out over low-lying areas, decreases in velocity and deposits it’s load of gravels, then sand then clays.
Till
Unsourced angular deposits of rock sand and clay.
Mainly unsorted subglacial material deposited by melting glaciers.
How are fluvioglacial landforms created?
Are created by the meltwater from glaciers.
