Djebel Tebaga
| Djebel Tebaga | ||
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 Djebel Tebaga |
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| height | 469 m | |
| location | Tunisia | |
| Coordinates | 33 ° 42 '44 " N , 9 ° 24' 30" E | |
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The Djebel Tebaga ( Arabic جبل طباقة, DMG Ǧabal Ṭabāqa ) is a mountain range with a maximum height of 469 meters in southern Tunisia in the area of the Gabès (eastern mountain range) and Kebili (central and western mountain range) governorates .
location
The ridge extends from its eastern wing ( Djebel El Aziza ) near the city of El Hamma in a sickle shape to the west and ends northwest of the small town of Kebili . From the middle to the western end, the ridge divides into two parallel main chains. The mountains run out to the west into a saddle that separates the Chott el Fedjadj from the Chott el Djerid and forms a peninsula when the water level is high . With its north sloping surfaces, it forms the southern boundary of the Chott el Fedjadj.
geology
Within the geomorphological contexts in the area of Tunisia, it is an example of the anticlines of the Atlas system that fade towards the south and thus forms the transition to the base of the Sahara table land . That is why it is one of those mountain ranges that are known as the Presaharean Atlas .
This ridge was created after a no longer existing Tebaga cathedral collapsed in the Chott valley. This process is dated to the later phase of the tertiary . Degradation in this area through erosion and renewed uplift of the remaining ridges leads to the present day relief up to the Quaternary period . This sequence is exemplary for the edges of the Chotts in southern Tunisia.
Countless rubble compartments are stored on the northern slopes . The Djebel Tebaga consists mainly of Cretaceous deposits, dolomitic limestones (from the Cenoman and Turon ), marls and mudstone . Permian rocks appear in a few places . Reef limestone was found here.
Settlement and water extraction
A few small oases that belong to the Nefzaoua oases are grouped on its expiring western wing . There are some rich ain ( spring pots ). In some cases they can reach a diameter of 80 meters and a depth of 10 meters. Their water exit occurs without major fluctuations. This concerns the oasis gardens Mannsoura , Telmine and Djedida as well as Rapta . There are also some spring hills that are less productive.
Foggara (here called Khraig ) are available for water supply in the region . These are man-made underground channels that direct their water from their taps to the oasis gardens. Some of the systems that continue from the north side of the mountain get their water through tunnels that start on its south side and are led through individual gorges.
literature
- Horst Mensching: Tunisia (Scientific Country Customers, Volume 1.), Darmstadt (Scientific Book Society) 1974.
Web links
Individual evidence
- ↑ Robert G. Bryant, Nick A. Drake, Andrew C. Millington, Bruce W. Sellwood: The chemical evolution of the brines of Chott el Djerid, Southern Tunisia - after an exceptional rainfall event in January 1990 . Sedimentology and Geochemistry of Modem and Ancient Saline Lakes, SEPM Special Publication No. 50, 1994 (PDF; 1.3 MB)
- ↑ Mensching: Tunisia, p. 207.