African Geographic Pictures Collection
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| Image number: | 2063 |
| Feature : | tafoni |
| Grouping : | weathering |
| Discipline : | geomorphology |
| Year : | 1996 |
| Locality : | Sodmein catchment |
| Country : | Egypt |
| Region - tribe : | Quseir |
| Physiographic region : | Desert-Red Sea Mountains |
| Notice : | Tafoni weathering in Thebes limestone. The outside of the rock is harder than the core because of migration of chemical rock constituents (often iron) from the core to the edge of the rock, where they precipitate. 'Case hardening' lies at the base of the typical form of tafoni. |
| Reference : | Moeyersons, Jan, 1996 Image 2063. In : Moeyersons, Jan : "African Geographic Pictures", http://www.africamuseum.be/en/research/collections_libraries/earth_sciences/collections/geopic" |