SWEET Ontology
type: Ontology
version info: 2.3
imports: realmLandform.owl

Arete
type: Class
subclass of: GlacialPlain
comment: A thin, almost knife-like, ridge of rock which is typically formed when two glaciers erode parallel U-shaped valleys.

Cirque
type: Class
subclass of: GlacialPlain
comment: An amphitheatre-like valley head, formed at the head of a valley glacier by erosion.

Esker
type: Class
subclass of: GlacialLandform
comment: A long winding ridge of stratified sand and gravel, examples of which occur in glaciated and formerly glaciated regions.

Kame
type: Class
subclass of: GlacialLandform
comment: An irregularly shaped hill or mound composed of sand, gravel and till that accumulates in a depresson on a retreating glacier, and is then deposited with further melting.[Wikipedia]

Moraine
type: Class
subclass of: GlacialPlain
equivalent class: GlacialMoraine
comment: Any glacially formed accumulation of unconsolidated glacial debris (soil and rock) which can occur in currently glaciated and formerly glaciated regions.

OutwashFan
type: Class
subclass of: GlacialLandform
comment: A fan-shaped body of sediments deposited by braided streams from a melting glacier. Sediment locked within the ice of the glacier gets transported by the streams of meltwater and deposits on the outwash plain at the terminus of the glacier.

RockGlacier
type: Class
subclass of: GlacialLandform
comment: Rock glaciers are distinctive geomorphological landforms of blocky detritus which may extend outward and downslope from talus cones or from glaciers or the terminal moraines of glaciers. [Wikipedia]

Sandur
type: Class
subclass of: GlacialOutwashPlain
comment: A glacial outwash plain formed of sediments deposited by meltwater at the terminus of a glacier.

TillPlain
type: Class
subclass of: GlacialPlain
equivalent class: Till
comment: An extensive flat plain of glacial till that forms when a sheet of ice becomes detached from the main body of a glacier and melts in place depositing the sediments it carried.

Thermokarst
type: Class
subclass of: GlacialLandform
comment: A land surface characterised by very irregular surfaces of marshy hollows and small hummocks formed as ice-rich permafrost thaws.