Hot Desert Environments
- Created by: Brad_ers_B
- Created on: 03-05-14 12:19
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- Hot Desert Environments
- Desert Environments
- Evaporation exceeds precipitation
- Can occur in hot and cold areas of the world
- Frosted sand grains
- High sphericity, well sorted grains
- Large scale cross stratification
- Saltation up shallower slope and avalanching down steeper slope
- Wadis
- The bed or valley of a stream in regions that is usually dry except during the rainy season
- Heavy rainfall = Flash flood
- Often forms an Oasis
- Poorly sorted conglomerates with sub-rounded grains if transported several times
- Brief transport means angular grains
- Desert conditions can lead to red coating of oxidised iron minerals on grains
- Playa Lake
- Only present at certain times of the year = Ephemeral
- Evaporite minerals are a concentration of weathering products that have been left behind
- Desiccation cracks, ripple marks and salt pseudomorphs
- Desert Environments
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