solifluction features
Link: http://w3id.org/permafrost/v/ipaglossary/t0306
Within: IPA Permafrost Glossary
Definition: Geomorphological features of varying scale produced by the process of solifluction (see Figure 16d).
| Term |
formes dues à la solifluxion
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solifluction features en |
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| Comment |
Typical solifluction features include: 1. solifluction apron - a fan-like deposit at the base of a slope; 2. solifluction lobe - an isolated, tongue-shaped feature, up to 25 m wide and 150 m or more long, formed by more rapid solifluction on certain sections of a slope showing variations in gradient; commonly has a steep (15?-60?) front and a relatively smooth upper surface. Fronts covered by a vegetation mat are called "turf-banked lobes" whereas those that are stony are called "stone- banked lobes". SYNONYM: (not recommended) mud-debris tongue. 3. solifluction sheet - a broad deposit of nonsorted, water-saturated, locally derived materials that is moving or has moved downslope. Sorted and/or nonsorted stripes are commonly associated with solifluction sheets. SYNONYM: solifluction mantle. 4. solifluction terrace - a low step, or bench, with a straight or lobate front, the latter reflecting local differences in rate of flow. A solifluction terrace may have bare mineral soil on the upslope part and 'folded-under' organic matter in both the seasonally thawed ground and the frozen ground. Those covered with a vegetation mat are called "turf-banked terraces"; those that are stony are called "stone-banked terraces".
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| dcterms:source |
https://doi.org/10.4224/20386561
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solifluction step
en
solifluction bench en |
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soliflual garland terrace
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