University of Pennsylvania Museum of Archaeology and Anthropology


By: Tessa de Alarcon

The pot on the left shows spalling.  This happens when the salts pop off circular patches of the surface.  You can see a spalled area in the front with the white salt crystals in the middle.  The pot on the right is delaminating.  This is also caused by the crystallization of salts.  In this case they crystallize in a single plane, pushing off thin layers of the ceramic.

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