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Hassi Aouleouel Formation
Click to display on map of the Ancient World at:
Hassi Aouleouel Fm base reconstruction

Hassi Aouleouel Fm

Period: 
Carboniferous

Age Interval: 
Serpukhovian – Moscovian


Province: 
Tindouf Basin

Type Locality and Naming

Djebilet-Yetti subbasin (exposed on northwest margin of Tindouf Basin)

Synonym:

References: Guerrak, 1989

[Fig. 1: Geological map of the Tindouf Basin region. (from Guerrak, 1989).]

[Fig. 2: Location of the Tindouf Basin Province, North Africa, and the six assessment units (AUs) (USGS, 2019).]

[Fig. 3: Stratigraphic column of the Tindouf Basin region (Guerrak, 1989).]

[Fig. 4: Stratigraphic correlation of the northern and southern flanks of the Tindouf Basin (Guerrak, 1989).]

[Fig. 5: Stratigraphic column of the study area (redrawn after Guerrak, 1988a).]


Lithology and Thickness

The Hassi Aouleouel Fm is about 350m thick and is made up of shales at the base that grades into sandy shales and fine-grained sandstones (Guerrak, 1989).


Lithology Pattern: 
Sandy claystone


Relationships and Distribution

Lower contact

Conformably overlies the Hassi El Barka Fm.

Upper contact

-NA- Basin surface

Regional extent

Extends throughout southern flanks of the Tindouf Basin; and Djebilet-Yetti subbasin (exposed on northwest margin of Tindouf Basin)


GeoJSON

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Fossils


Age 

Serpukhovian – Moscovian

Age Span: 

    Beginning stage: 
Serpukhovian

    Fraction up in beginning stage: 
0.00

    Beginning date (Ma): 
330.34

    Ending stage: 
Moscovian

    Fraction up in the ending stage: 
1.0

    Ending date (Ma):  
307.02

Depositional setting


Depositional pattern:  


Additional Information


Compiler:  

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

Andrea Ciampalini, Francesca Garfagnoli, Benedetta Antonielli, Chiara Del Ventisette & Sandro Moretti (2012) Photo-lithological map of the southern flank of the Tindouf Basin (Western Sahara), Journal of Maps, 8:4, 453-464, DOI: 10.1080/17445647.2012.746947

Guerrak S. (1989): Time and space distribution of Palaeozoic oolitic ironstones in the Tindouf Basin, Algerian Sahara. In: Young, T. P. & Taylor, W. E. G. (eds), 1989: Phanerozoic Ironstones

Geological Society Special Publication 46, pp. 197-212Guerrak S. (1988a): Geology of the Early Devonian oolitic iron ore of the Gara Djebilet field. Saharan Platform, Algeria. Ore Geology Reviews, (In Press).