earthstory:Wind erosionA really cool find in the deserts of Northern Africa. Wind is a major erosive
earthstory:Wind erosionA really cool find in the deserts of Northern Africa. Wind is a major erosive force, capable of picking up and carrying sand grains, but the wind is limited. Most winds are easily able to pick up sand, but pebbles are usually too big for the wind to move.This photo is about 4 cm across. There are small pebbles sitting on top of sand; the wind can move the sand but not the pebbles. The pebbles have protected the sand grains below them, creating pillars of sand beneath the pebbles. These would be called deflation features; remnants of sand being removed by the wind.-JBBImage credit: https://www.flickr.com/photos/banco_imagenes_geologicas/8558090382 -- source link