Title:

Formen und Formung in der Pränamib (Flächen-Namib)

Author(s):
Publication Year:
1978
Abstract:

The Namib Plain between Kuiseb River and Swakop River rises with a mean gradient of 1 % from sea level to 1000 m. Locally the gradient varies between 0,5 and 1,5 %. The crest of the plain lies far from the Great Escarpment, and is morphologically unrelated to the latter and to the incisions of the Kuiseb and the Swakop. Thus, the Namib Plain truncates the steeply-dipping basement rocks, younger detritus accumulations and thick sand beds as a denudational plain in its own right; it cannot be interpreted as a pediment of the Great Escarpment. Within this plain, one can distinguish portions that are cone-shaped, and others that are inclined planes. The cone-shaped portions of large extent are little affected, if at all, by present-day sheet wash. The inclined plane portions posses networks of active rills. Within the inclined planes there are gently conical surface segments with widely spaced rills, and gently funnel-shaped surface segments with more densely spaced rills. These segments differ locally by about 2 to 5 m in elevation, but are equally affected by present-day processes (wash, deflation and eolian corrasion). The development of conical shapes is always connected with the presence of coarse detritus covers, the development of the inclined planes with the presence of sands and gravels. Keywords: Namibia, Namib Desert, Kuiseb River, geomorphology, climate, weathering, crust formation, landscape evolution, sand composition, sand accumulation, sand transport, sand relief.

Publication Title:

Zeitschrift für Geomorphologie

Volume:
30
Pages:
55-73
Item Type:
Journal Article
Language:
de
Files:
Attachment Size
Formen und Formung in der Praenamib.pdf 12.05 MB

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