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SenegalBasin Salt Formation
Click to display on map of the Ancient World at:
SenegalBasin Salt Fm base reconstruction

SenegalBasin Salt Fm


Period: 
Triassic

Age Interval: 
Norian-Rhaetian


Province: 
Senegal Basin

Type Locality and Naming

This is only an INFORMAL NAME to enable a Lexicon entry.

Diana-Malari (DM–1) and Kolda (KO–1) wells (Brownfield and Charpentier, 2013).

Synonym:

References: Brownfield and Charpentier, 2003

[Fig. 1. Generalized map of the central and southern parts of the Senegal Basin showing part of the Senegal Province, the Mauritania, Northern, and Casamance subbasins, the Mesozoic carbonate platform edge, the northern and southern salt basins, the Mauritanide Mountains, the Bové Basin, Deep Sea Drilling Project sites 367 and 368, the 2-second sediment isopach, and the onshore depth to basement isopachs (Brownfield and Charpentier, 2003)]

[Fig. 2: Generalized stratigraphic column for the Northern subbasin and the southern part of the Mauritania subbasins (Brownfield and Charpentier, 2003).]


Lithology and Thickness

Up to 2000 meters (!) of evaporite-dominated sediments (Brownfield and Charpentier, 2003).


Lithology Pattern: 
Evaporite


Relationships and Distribution

Lower contact

It conformably overlies the SenegalBasin Rift-basin Fm

Upper contact

It is conformably overlain by the SenegalBasin Jurassic Platform Fm

Regional extent

Senegal, Mauritania, Senegal, The Gambia, and Guinea-Bissau, Northwest Africa


GeoJSON

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Fossils


Age 

Miocene

Age Span: 

    Beginning stage: 
Norian

    Fraction up in beginning stage: 
0.00

    Beginning date (Ma): 
227.30

    Ending stage: 
Rhaetian

    Fraction up in the ending stage: 
1.0

    Ending date (Ma):  
201.36

Depositional setting


Depositional pattern:  


Additional Information


Compiler:  

Enam O. Obiosio, Solomon Joshua Avong, Henry Nasir Suleiman, Rebecca Bobick (and Wen Du), modified from Brownfield, M.E. and Charpentier, R.R., 2003. "Assessment of the Undiscovered Oil and Gas of the Senegal Province, Mauritania, Senegal, The Gambia, and Guinea-Bissau, Northwest Africa", U.S. Geological Survey Bulletin 2207-A, 1-26.