Deserts are arid, not semiarid. Semiarid would be other biomes such as the grasslands or steppes.
Wind erosion causes all the conditions mentioned in your question.
Wind picking up grains of sand, using the grains like sandpaper, weather and create strange shaped desert rocks, as often shown in movie Westerns.
The wind originates in the Sahara Desert.
Desert erosion is mainly caused by grains of sand carried on the wind - acting like sandpaper against rocks.
Wind
Desert pavement is formed by the gradual removal of sediment by rain and/or wind, leaving only larger sediment behind.
Wind is the main agent of erosion in the desert.
its WIND.
hot desert wind
hot desert wind
Wind erosion, a type of erosion where wind blows away sediment, is common in desert areas.
Wind actions, by deflation (upliftment, transportation and deposition of desert materials like sand and dust from one place to another).