Interesting fact: Deserts cover about one-third of Earth's land surface and vary widely in composition and density.
The answer: A typical large desert, such as the Sahara, weighs approximately 1.5 x 10^18 kilograms (about 1.65 x 10^18 US tons), depending on sand and rock density and depth.
Deserts are vast land areas characterized by low precipitation and sparse vegetation. Their weight depends on the volume and density of sand, rocks, and soil present. For example, the Sahara Desert covers about 9.2 million square kilometers with an average sand depth of several meters. Considering typical sand density, the total mass of the Sahara's surface materials is estimated in the quintillions of kilograms.
