Diba Formation

Diba Fm

Period:

Paleogene

Age Interval:

Oligocene (Chattian)

Province:
Sirte Basin

Type Locality and Naming

Located in the south-central part of the basin (Abugares, 2007). Upper formation of the Najah Gr

Synonym: Dibba Fm, Dibo Fm.

References: Ahlbrandt, 2001; Abugares, 2007

Lithology and Thickness

Consists of an alternating sequence of thick, fine to coarse sandstone units and thin, soft shale (Abugares, 2007). But according to Ahlbrandt (2001 – Fig. 7), it is made up entirely of sandstone.

Lithology Pattern:

Sandstone

Relationships and Distribution

Lower contact

It conformably overlies the Arida Fm.

Upper contact

It is conformably overlain by the Marada Fm.

Regional extent

GeoJSON

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Fossils

Age

Age Span:

Beginning stage:

Chattian

Fraction up in beginning stage:

0.0

Beginning date (Ma):

27.29

Ending stage:

Chattian

Fraction up in the ending stage:

1.0

Ending date (Ma):

23.04

Depositional setting

Depositional pattern:

Additional Information

Compiler:

T. S. Ahlbrandt (2001): The Sirte Basin Province of Libya—Sirte-Zelten Total Petroleum System, U.S. Geological Survey Bulletin 2202–F

R.C. Selley (1997): The Sirte Basin of Libya. In: African Basins. Sedimentary Basins of the World, 3, edited by R.C. Selley (Series Editor: K.J. Hsu), Elsevier Science B.V., Amsterdam, pp. 27-37.

Abugares, Miloud M. (2007): Deposition, Diagenesis, and Reservoir Development of the Cretaceous Lidam Formation, SE Sirt Basin, Libya. Durham e-Theses. http://etheses.dur.ac.uk/2599/

Elkanouni, I. E. D. (2014). Sedimentology, Sequence stratigraphy and Spatial-temporal Patterns of the late Paleocene Succession, western Sirt Basin, Libya, Durham e Theses. http://etheses.dur.ac.uk/10538/