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Kordofan Gr

Kordofan Gr


Period: 
Paleogene, Neogene, Quaternary

Age Interval: 
Paleocene - Recent


Province: 
Sudan S

Type Locality and Naming

Muglad Basin -- SW Sudan and the northwestern part of South Sudan. The group is an upward succession of the Nayil Fm, Tendi Fm, Adok Fm and Zeraf Fm.

Reference section: Makeen et al., 2013; Ahmed and Ozumba, 2017; Dou et al., 2023;

[Fig. 1: Western and Central African rift system. West African rift subsystem and Central African]

[Fig. 2: General stratigraphic column - Muglad Basin, Sudan, showing three geological cycles – Neocomian to Barremian, Aptian to Maastrichtian, and Paleocene to Pliocene - Miocene, or Quaternary and Petroleum Systems (from Ahmed and Ozumba, 2017)]

[Fig. 3: Comprehensive stratigraphic columns in the Muglad Basin (from Dou et al., 2023)]

[Fig. 4: Regional stratigraphy of the Muglad basin, SW Sudan (after Schull 1988; Dou Lirong et al. 2013 – extracted from Makeen et al., 2013)]

[Fig. 5: Location map of the Fula sub-basin in the Muglad basin including oilfields (study area) (after Dou Lirong et al. 2013 – extracted from Makeen et al., 2013)]


Lithology and Thickness

Claystone in the Nayil Fm and Tendi Fm, the coarse-grained clastics in the Adok Fm and Zeraf Fm. The Kordofan Group is about 3800m thick (Fig 1 of Jingyao, 2015)


Lithology Pattern: 
Sandy claystone


Relationships and Distribution

Lower contact

unconformably rests on the Amal Formation

Upper contact

Alluvium

Regional extent

Muglad Basin -- SW Sudan and the northwestern part of South Sudan


GeoJSON

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Fossils


Age 

Eocene through Quaternary

Age Span: 

    Beginning stage: 
Ypresian

    Fraction up in beginning stage: 
0.00

    Beginning date (Ma): 
56.00

    Ending stage: 
Holocene

    Fraction up in the ending stage: 
1.0

    Ending date (Ma):  
0.00

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:

Dou D., Dingsheng C., Zhi L., Zhiwei Z., Jingchun W. (2013): Petroleum Geology of the Fula Sub-Basin, Muglad Basin, Sudan. Journal of Petroleum Geology, 36(1): pp.43-60

Jingyao W. (2015): The Study of Sequence Stratigraphy and Sedimentary System in Muglad Basin. IOSR Journal of Applied Geology and Geophysics (IOSR-JAGG), 3(6): pp.37-40

Makeen Y. M., Abdullah W. H., Hakimi M. H. (2013): Biological markers and organic petrology study of organic matter in the Lower Cretaceous Abu Gabra sediments (Muglad Basin, Sudan): origin, type and palaeoenvironmental conditions. Arabian Journal of Geosciences. DOI 10.1007/s12517-013-1203-z

Lenhardt, N., Omietimi, E. J., Edegbai, A. J., Schwark, L., Catuneanu, O., Fairhead, J. D., Gotz, A. E. (2025): Traversing the rift: A review of the evolution of the West and Central African Rift System and its economic potential. Earth-Science Reviews, 261: pp. 1-39