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
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 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 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