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Saheb El Djir Formation
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Saheb El Djir Fm base reconstruction

Saheb El Djir Fm

Period: 
Devonian

Age Interval: 
Lochkovian


Province: 
Reggane Basin

Type Locality and Naming

SW Algeria.

Synonym:

References:

[Figure 1: Map showing the six assessment units (AUs) in the Reggane Basin Province, Algeria (USGS, 2018).]

[Figure 2: Paleozoic litho-stratigraphic, sequence stratigraphy, and tectonic framework of the north peri-Hoggar basins (North African Saharan Platform) (Perron et al., 2020).]

[Figure 3: Geodynamic synthesis and lithostratigraphy of the Central Sahara and the Ouagarta Chain with major tectonic events (Kracha, 2011).]

[Figure 4: Geographical map of the basins of North Africa – showing the Reggane Basin (Carte SONATRACH, Division Exploration, in Akkouche, 2007).]


Lithology and Thickness

The Saheb El Djir Fm is made up entirely of sandstones (Peron et al., 2018).


Lithology Pattern: 
Sandstone


Relationships and Distribution

Lower contact

It conformably overlies the Zemlet Fm.

Upper contact

It is conformably overlain by the Dkhissa Fm.

Regional extent

SW Algeria. 75,000 Km2


GeoJSON

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Fossils


Age 


Age Span: 

    Beginning stage: 
Lochkovian

    Fraction up in beginning stage: 
0.5

    Beginning date (Ma): 
415.70

    Ending stage: 
Lochkovian

    Fraction up in the ending stage: 
1.00

    Ending date (Ma):  
412.40

Depositional setting

continental/fluvial in the south, passing into deltaic/shallow marine sandstones with argillaceous intercalations towards the north and northwest (Wendt et al., 2006).


Depositional pattern:  


Additional Information


Compiler:  

Enam O. Obiosio, Solomon Joshua Avong and Henry Nasir Suleiman (2024) - Stratigraphic Lexicon compiled from the following books:

Wendt J., Kaufmann B., Belka Z., Korn D (2008): Carboniferous Stratigraphy and Depositional Environments in the Ahnet Mouydir Area (Algerian Sahara). In: Facies. DOI 10.1007/s10347-008-0176-y

Wendt J., Kaufmann B., Belka Z., Klug C. & Lubeseder S. (2006): Sedimentary evolution of a Palaeozoic basin and ridge system: the Middle and Upper Devonian of the Ahnet and Mouydir (Algerian Sahara). Geol. Mag. 143 (3) pp. 269–299. doi:10.1017/S0016756806001737

Derder M, E.M., Henry B., Amenna M., Bayou B., Djellit H., Guemache M. A., Hemmi A. (2009): New structural implications for the central Sahara (Algeria), from the revisited Upper Carboniferous “Hassi Bachir” Formation: Paleomagnetic constraints. Tectonophysics, 463: pp.69–76.

Perron P., Guiraud M., Vennin E., Moretti I., Portier E., L. Le Pourhiet, M. Konaté (2018): Influence of basement heterogeneity on the architecture of low subsidence rate Paleozoic intracratonic basins (Reggane, Ahnet, Mouydir and Illizi basins, Hoggar Massif). Solid Earth, 9: pp.1239-1275.