Incremental aggradation on the Okavango Delta-fan, Botswana

Auteurs :
McCARTHY, T. S.
STANISTREET, I. G.
CAIRNCROSS, B.
ELLERY, W. N.
ELLERY, K.
OELOFSE, R.
GROBICKI, T. S. A.

Description :
This work has confirmed that channel switching is the result of aggradation within the channel systems. Initially, new channel systems are erosive but later in their evolution both channel bed and adjacent swamp (peat) areas begin to aggrade. This phase leads to a change in channel gradient and causes the channel to become moribund. Abandonment follows with consequent dessication of the peat. Burning of the peat completes the cycle of the channel evolution.


Type de document :
Article de périodique

Source :
Geomorphology, 1988, vol. 1, n°. 3, p. 267-278, Références bibliographiques : 10 réf.

Date :
1988