Encyclopedia of Engineering Geology

2018 Edition
| Editors: Peter T. Bobrowsky, Brian Marker


  • Gwyn Lintern
Reference work entry
DOI: https://doi.org/10.1007/978-3-319-73568-9_232


Drift sand; Mire; Quagmire


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.

The condition may occur in sediment with either standing water or flowing water. In the former case, the condition can be triggered by ground shaking (liquefaction). Most quicksand occurs in settings where there are natural springs, either at the base of alluvial fans, along riverbanks, or on beaches at low tide. In such cases, the loose packing is maintained by the upward movement of water (Fig. 1; Long 2002).
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© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  • Gwyn Lintern
    • 1
  1. 1.Geological Survey of CanadaSidneyCanada