African Geographic Pictures Collection
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| Image number: | 1317 |
| Feature : | river tufa |
| Grouping : | karst, caves, chemical deposits |
| Discipline : | geomorphology |
| Year : | 1999 |
| Locality : | Kuruman |
| Country : | South-Africa |
| Region - tribe : | Northern Cape |
| Physiographic region : | Vaal & Orange River basin |
| Notice : | notice River tufa are chemical precipitates of calcium carbonates, CaCO3, along plces of higher water turbulence, like rapids, chutes and waterfalls. Plants like lychens and mosses seem to catalyse the process. |
| Reference : | Moeyersons, Jan, 1999 Image 1317. In : Moeyersons, Jan : "African Geographic Pictures", http://www.africamuseum.be/fr/research/collections_libraries/earth_sciences/collections/geopic" |