LANDFROMS FORMED BY GLACIAL EROSION

LANDFORM	DESCRIPTION
Abrasion by glacier ice - streamlined relief forms (mm to 1000 km)
Areal Scouring	Regional expenses of lowland Bedrock, upto 1000s KM in extent, scoured by Ice. Sometimes contain sets of parallel groves and bedrock flutes
Glaciated Valley	Glacial trough, the floor of which is above sea level, Often U shaped
Fjord	Glacial trough, the floor of which is below sea level,. Often U shaped
Hanging Valley	Tributary Valley whose floor sits above the floor of the trunk valley
Breached watershed	Col abraded by a valley glacier spilling out of its confining trough
Dome	Dome-shaped structure found in uniform bedrock where ice has abraded an obstacle to leave a smoothed rock hillock that has been subject to exfoliation
Whaleback or rock drumlin	Glacially streamlined erosional eature 100-1000 m long intermediate in size between a roche moutonee and flggberg
Striation	Scratch on Bedrock or clast made by ice (or other geomorphic agent such as landslides, techtonic disturbance and animals)
Polished surface	Bedrock surface made shiny by a host of tint scratches scoured by finely grained clasts
Groove	A furrow cut into bedrock by fragments of rocks held by advancing ice
Plastically moulded forms (p-forms)	Smooth and complex forms on rock surface. They include Cavetto forms (channels on steep rock faces) and grooves (on open flat surfaces). Sichelwannen and Nye channels (curved and winding Channels) are also p-forms bur probably produced mainly by eltwater erosion
Abrasion and rock fracturing by glacir ice - partly streamlined relief forms (1m - 10 km)
Trough head	Steep rocky face at the head of many glaciated valleys and fjords
Rock or valley Step	Bedrock step in the floor of glacial troughs, possibly where the bedrock is harder and often where the valley narrows
Riegel	Low rock ridge, step or barrier lying across glaciated valley floor
Cirque	Steep walled semi circular recess or basin the bountain
Col	Low pass connecting two cirques facing in opposite directions
Roche Moutonnee	Bedrock feature, generally less than 100 m long, th elong axis of which lies parallel to the direction of ice movement. The up-ice (stoss) side is abraded, polished and gently sloping and the down-ice (lee) side is rugged and steep
Flyggberg	Large (>100 m Long) streamlined bedrock feature, fformed through erosion by flowing ice. The up-ice (stoss) side is polished and gently sloping, whereas the down-ice (lee) side is rough, irregular and steep. A flyggberg is a large scale roche moutonnee or whaleback.
Crag and tail or leeside cone	An assymetrical landform comprising a ruged crag with a smooth tail at its lee
Rock crushing - non-streamlined relief forms (cm to 10s cm)
Lunate Fracture	Crescent shaped fractures with the concavity facing the direction of Ice Flow
Crescentic Gouge	Crescent shaped fractures with the concavity facing away from the direction of Ice Flow
Crescentic Fracture	Small, crescent shaped fractures with the concavity facing away from the direction of Ice Flow
Chattermarks	Crescent shaped friction cracks on bedrock, produced by the juddering motion of moving ice
Erosion by glacier ice, frost shattering, mass movement - residual relief forms (100m to 100Km)
Arete	Narrow, sharp-edged ridge seperating two cirques
Horn	Peak formed by intersecting walls of three or more cirques. An example is the Matterhorn
Nunatak	Unglaciated island of bedrock, formerly or currently surrounded by ice