A hard covering or coat on the surface of another material. In minerals, a crust on one mineral may be redeposited over another. Weathering may oxidize or deteriorate the surface of some materials forming a hard, sometimes protective, crust. A crust may also be formed by pollution. See Black crust, Gypsum crust, Gypcrete, and Caliche.
Synonyms and Related Terms
crusting; incrustation; encrustation; black crust; gypsum crust; caliche; gypcrete
Sources Checked for Data in Record
- Dictionary of Building Preservation, Ward Bucher, ed., John Wiley & Sons, Inc., New York City, 1996
- Encyclopedia Britannica, http://www.britannica.com Comment: "crust" Encyclopædia Britannica Premium Service. [Accessed 18 Oct. 2005].
- Wikipedia: http://en.wikipedia.org/wiki/Crust (accessed Jan 6, 2006)
- Art and Architecture Thesaurus Online, http://www.getty.edu/research/tools/vocabulary/aat/, J. Paul Getty Trust, Los Angeles, 2000