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Alluvial fans spread gravel like open fans at arid mountain feet

Nature Deserts
www.daily-feeds.com

Alluvial fans spread gravel like open fans at arid mountain feet

Shahzad Mahota Published By Shahzad Mahota @shahzad-mahota

Alluvial fans spread gravel like open fans at arid mountain feet

When rare floods exit a steep desert canyon onto a flat basin, they drop their load in a triangular alluvial fan of gravel, sand, and silt.

Channels shift across the fan over time, building a gentle cone that stores water briefly and feeds downslope oases or playas.

Mountains donate their scrap. Alluvial fans are the arid land’s loading docks — where rock waste becomes new ground.
Nature Deserts Mountains Rivers & Lakes Earth Science
Shahzad Mahota Shahzad Mahota @shahzad-mahota

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Alluvial fans spread gravel like open fans at arid mountain feet