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Compiled by: Jacques LeBlanc (2022), Stratigraphic Lexicon: The Sedimentary Formations of The Republic of Niger, Africa. Colnes Publishing (Tallin, Estonia), 365 pp. For more information see "About"

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Korama Formation
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Korama Fm base reconstruction

Korama Fm


Period: 
Quaternary

Age Interval: 
Quaternary (7a, 7b, 7c)


Province: 
East Niger Rift Basin - Termit Sub-basin

Type Locality and Naming

Saley, 2018

References:

Synonym:


Lithology and Thickness

[Not given; but "unclear if part of Chad", then sandy claystone?]


Lithology Pattern: 
Sandy claystone


Relationships and Distribution

Lower contact

No underlying unit is mentioned in Saley (2018). It is unclear if the Korama Fm should be part of the Chad Fm or placed above it (younger).

Upper contact

None

Regional extent

East Niger Rift Basin - Termit Sub-basin (near Lake Chad)


GeoJSON

{"type":"Feature","geometry":{"type":"MultiPolygon","coordinates":[[[[10.98,17.2],[10.92,16.77],[11.93,15.49],[13.22,14.16],[13.39,13.43],[13.91,13.27],[14.5,13.11],[14.81,14.16],[14.7,14.96],[14.94,15.31],[14.66,15.37],[14.53,15.86],[13.18,17.57],[12.76,17.58],[12.67,17.91],[12.33,17.86],[11.77,17.8],[11.35,17.64],[10.98,17.2]]]]}}

Fossils


Age 

[Not given; but "unclear if part of Chad", then upper Pleistocene?]

Age Span: 

    Beginning stage: 
Chibanian

    Fraction up in beginning stage: 
0.0

    Beginning date (Ma): 
0.77

    Ending stage: 
Holocene

    Fraction up in the ending stage: 
0.0

    Ending date (Ma):  
0.01

Depositional setting

Continental


Depositional pattern:  


Additional Information

Aquifer near the Lake Chad dependent on the fossilization of the rivers feeding it, and the rainfall deficit. In exhaustion at the Zinder AEP catchment.


Compiler:  

Jacques LeBlanc (2022), Stratigraphic Lexicon: The Sedimentary Formations of The Republic of Niger, Africa. Colnes Publishing (Tallin, Estonia), 365 pp. https://doi.org/10.47909/978-9916-9760-6-7 (or via https://sites.google.com/site/leblancjacques)