Arid region geomorphologyWhat causes the erosion and deposition?
- Wind, Water, and Gravity
Arid region geomorphologyWhat causes the erosion and deposition?
- Wind, Water, and Gravity
Badlands topography with terraces
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…
Nile River-
An exotic stream
Nile River-
An exotic stream
Colorado River-Dammed
Alluvial fans in Death Valley GrabenAlluvial fans in Death Valley Graben
Playa lake,
Owens Valley,
CA
Sand Dunes in Colorado Great Sand Dunes National Monument
Star Dune in Mexico
Linear Dunes
With an exotic stream
Transverse dunes in Namibia
Erosional landforms vs. Depositional landforms
Erosional 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 ColoradoPiedmont in Colorado
Colorado Plateau with Grand Canyon
A Mesa
Buttes and Spires in Monument valley, Utah
Yardang
Desert Pavement and Desert Varnish
Ventifact
ventifacts
Walking Boulders