canyon Archives - Free ZIMSEC & Cambridge Revision Notes

Wadis,Bahadas and the Desert Piedmont zone

Alluvial fan/Bajada/Bahada. Image credit MediaWiki ZIMSEC O Level Geography Notes: Wadis and Bahadas

Wadis/Canyons

As already pointed out freak storms occur in deserts characterised by excessive precipitation over short periods of time.
Due to infiltration excess flow and even saturation excess flow there is significant run off in the […]

Messa (left) and Butte (right). Image credit channingchurch.com ZIMSEC O Level Geography Notes: Mesa and Butte

Mesas and buttes are flat topped uplands with steep sides and often capped by hard resistant rocks.
Mesas and buttes are desert features created primarily by river erosion […]

The Gorges du Verdon. Image credit weebly.com ZIMSEC O Level Geography Notes: Gorges

Gorge– is a narrow valley between hills or mountains, typically with steep rocky walls and a river/stream running through it.
These can occur in virtually any part of a river’s course provided […]