Quicksand is sediment of low bearing capacity caused by high volumes of water, or more rarely air, and a resultant decrease in the intergranular pressure due to disturbance. Quicksand is not any special type of sand, but instead it is a condition of zero effective stress.
- Long DGF (2002) What is quicksand? Scientific American article. https://www.scientificamerican.com/article/what-is-quicksand/