Afendi Fm

Period:

Ordovician

Age Interval:

Darriwilian – Katian, Sr (1,2)

Province:
Syria

Type Locality and Naming

Column: Syria, and in SE Syria column (where it has a sandy unit in middle, hence: claystone Afendi (C) Fm, sandy Kahfah Fm, claystone Afendi (B) Fm in SE Syria

Synonym: Afandi Fm (spelling), Kahfah Fm

Lithology and Thickness

Comprised of mostly continental sandstone and siltstone with rare intercalations of limestone.

Lithology Pattern:

Clayey sandstone

Relationships and Distribution

Lower contact

Regionally, the schematic strat column indicates the next older unit as Swab Fm

Upper contact

Regionally, the schematic strat column indicates the next younger unit as Tanf Fm

Regional extent

Afendi (C) Fm is equivalent to the Qasim Fm in NW Saudi Arabia, the Umm Tafira Fm in NE Jordan, and the Khabour in W Iraq. Afendi (B) Fm is equivalent to the Qasim in NW Saudi Arabia, the Umm Tafira Fm in NE Jordan, and the Khabour Fm in W Iraq.

GeoJSON

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Fossils

Age

Darriwilian – Katian

Age Span:

Beginning stage:

Darriwilian

Fraction up in beginning stage:

0.9

Beginning date (Ma):

459.30

Ending stage:

Katian

Fraction up in the ending stage:

0.3

Ending date (Ma):

450.49

Depositional setting

Depositional pattern:

Additional Information

Compiler:

From Middle East Geological Timescale 2008 Al-Husseini, Journal of Middle East Petroleum Geosciences v 13, no. 4