African Geographic Pictures Collection
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| Image number: | 493 |
| Feature : | tufa |
| Grouping : | karst, caves, chemical deposits |
| Discipline : | geomorphology |
| Year : | 1999 |
| Locality : | Roaxa |
| Country : | Ethiopia |
| Region - tribe : | Tigray |
| Physiographic region : | Abessinian highlands |
| Notice : | Tufa plug formed at waterfall along affluent of the Roaxa river. Tufa do not develop anymore. River incises the chemical deposits which are in a state of weathering |
| Reference : | Moeyersons, Jan, 1999 Image 493. In : Moeyersons, Jan : "African Geographic Pictures", http://www.africamuseum.be/en/research/collections_libraries/earth_sciences/collections/geopic" |