June 2015

Wadis,Bahadas and the Desert Piedmont zone

By |2017-01-17T11:21:54+02:00June 15th, 2015|Hot Deserts, Notes, O Level Geography, Ordinary Level Notes|

Alluvial fan/Bajada/Bahada. Image credit MediaWiki

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 […]

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Mesa and Butte

By |2017-01-17T11:21:56+02:00June 15th, 2015|Hot Deserts, Notes, O Level Geography, Ordinary Level Notes|

Messa (left) and Butte (right). Image credit channingchurch.com

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 […]

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Wind in deserts

By |2017-01-17T11:22:03+02:00June 12th, 2015|Hot Deserts, Notes, O Level Geography, Ordinary Level Notes|

A sandstorm in a desert. Image credit

A sandstorm in a desert. Image credit annechia.com ZIMSEC O Level Geography Notes: Wind in Deserts
    • Wind is responsible for eroding, transporting and depositing materials in deserts.
    • To learn more go to Wind Action in Deserts.
    • Various landforms are formed by the above processes. […]

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