Doubayat Fm

Period:

Triassic, Permian

Age Interval:

Changhsingian – Olenekian, Sr1

Province:
Syria

Type Locality and Naming

Column: Syria

Synonym: Dubayat Gr; Formerly known as "Amanus Shale Fm." Name rendered obsolete by "Lexique Stratigraphique: Syrie Interieure."

Lithology and Thickness

Top: 128m thick of black, calcareous shale grading to siltstone at the base. Some limestone found throughout in bands. Middle: 322m brow-red, chocolate, or grey-black shale with micaceous streaks. Base: ~143m of white to grey quartzite and greywacke interbedded with black shale. Further divided into Doubayat Fm, it is Claystone, Sandy claystone and Sandstone in Schematic strat column.

Lithology Pattern:

Clayey sandstone

Relationships and Distribution

Lower contact

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

Upper contact

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

Regional extent

GeoJSON

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Fossils

Fossils detected in thin sections. Some limestone beds throughout. Abundant plant fossils.

Age

Changhsingian – Olenekian

Age Span:

Beginning stage:

Changhsingian

Fraction up in beginning stage:

0.0

Beginning date (Ma):

254.24

Ending stage:

Olenekian

Fraction up in the ending stage:

0.3

Ending date (Ma):

248.93

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. Syrie Int. pg 208-211.