Relict sorted patterned ground in Lesotho

Auteur :
SUMNER, P.

Description :
Relict sorted patterned ground is described from an upland interfluve on the Lesotho-South Africa border at an elevation of 3280 m a.s.l. The site comprises 2-4° slope angles. Frost penetration through the regolith is inferred to have been to 1 m depth during pattern formation. Sorting is thought to have resulted from deep seasonal freezing during the depressed temperatures of the Late-Pleistocene Last Glacial Maximum. No direct evidence for permafrost is documented.


Type de document :
Article de périodique

Source :
Permafrost and periglacial processes, issn : 1045-6740, 2004, vol. 15, n°. 1, p. 89-93, nombre de pages : 5, Collation : Illustration, Références bibliographiques : 14 ref.

Date :
2004

Editeur :
Pays édition : Royaume-Uni, Chichester, Wiley