Landforms by Fluvial Processes Flashcards
1
Q
Wadi
A
Steep sided gorge like valleys
Encised by ephemeral rivers
By abrasion and hydraulic action
2
Q
E.g of a wadi
A
Wadi Bani Khalid, Oman
In the Atlas Mountains, Morocco
3
Q
Bajada
A
Alluvial fans spread from a wadi coalesce to form a Bajada
4
Q
E.g. of Bajada
A
In the Hexie Mountains, Mojave
5
Q
Pediments
A
Steep sloping rock platform
Caused by parallel retreat of a plateau
6
Q
Playas
A
A dry lakebed high in evaporites Following rainfall/flood Accumulate in a depression or lakebed Evaporate in sun Leaving dry mineral salts (esp. chlorides)
7
Q
E.g of playa
A
Chott el Djerid, Tunisia
Death Valley
8
Q
Inselberg
A
Rounded steep sided hills
Caused by parallel retreat of rock from mainly fluvial erosion
Basal surface exposed and stripped
9
Q
E.g. of inselberg
A
Uluru, Australia
10
Q
Mesas and Buttes
A
Isolated flat-topped plateaus
Desert surface is incised by wadis and canyons
Left with columns of hard rock
11
Q
E.g of Mesa and Buttes
A
Monument Valley, USA
