arid region geomorphology... what causes the erosion and deposition? - wind, water, and gravity arid...
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Arid region geomorphology...What causes the erosion and deposition?
- Wind, Water, and Gravity
Arid region geomorphology...What causes the erosion and deposition?
- Wind, Water, and Gravity
Types of streams in Arid and semi-Arid locales
Exotic streams- begin in areas that are not arid and flow into the desert.
Ex. Nile River, Colorado River, Okavango River
Local streams (Arroyos) - begin in the arid region, and often end there as well.
There are many streams of this type…
Types of streams in Arid and semi-Arid locales
Exotic streams- begin in areas that are not arid and flow into the desert.
Ex. Nile River, Colorado River, Okavango River
Local streams (Arroyos) - begin in the arid region, and often end there as well.
There are many streams of this type…
A dry stream channel (arroyo)Note the scale of the bouldersA dry stream channel (arroyo)Note the scale of the boulders
Barchanoid dunes with smaller transverse & barchanoid dunes superimposed on themBarchanoid dunes with smaller transverse & barchanoid dunes superimposed on them
Erosional landforms vs. Depositional landformsErosional forms include...
Pediment - bedrock ramp that leads up to the mountain front
Plateau- large flat undeformed area that is topographically higher than the
surrounding region
Mesa- Smaller than the plateau, but basically the same feature
Buttes- smaller than the Mesa, but basically the same feature
Spires (a.k.a. Hoodoos)- smaller than the buttes
Piedmont in Colorado
Piedmont is a geographic designation relating to the slope and or foothills leading to a mountain range
Piedmont in Colorado
Piedmont is a geographic designation relating to the slope and or foothills leading to a mountain range
Boulders (foreground) collected from desert pavement (background)Boulders (foreground) collected from desert pavement (background)