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Ga'ara Formation
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Ga'ara Fm base reconstruction

Ga'ara Fm


Period: 
Permian

Age Interval: 
Asselian – Capitanian, Iq3, Sa4


Province: 
Iraq, Saudi Arabia

Type Locality and Naming

Column: Rutba Uplift (W Iraq), Column: NW Saudi Arabia

Synonym:


Lithology and Thickness

Comprises cross-bedded sandstones overlying mottled mudstones with occasional thick cross-bedded sandstone beds.


Lithology Pattern: 
Clayey sandstone


Relationships and Distribution

Lower contact

Regionally, the schematic strat column indicates the next older unit as Bir El Rah Fm

Upper contact

Regionally, the schematic strat column indicates the next younger unit as the Mulussa Fm (Rutba uplift of W. Iraq) or Unayzah Gr (NW Saudi Arabia).

Regional extent


GeoJSON

{"type":"Feature","geometry":{"type":"MultiPolygon","coordinates":[[[[41.85,30.29],[41.57,31.15],[40.03,32.34],[39.94,32.63],[39.45,32.74],[39.29,32.45],[39.43,32.14],[37.83,31.31],[38.33,30.32],[36.59,29.15],[38.72,27.08],[40.73,27.72],[41.85,30.29]]]]}}

Fossils


Age 

Asselian – Capitanian

Age Span: 

    Beginning stage: 
Asselian

    Fraction up in beginning stage: 
0.0

    Beginning date (Ma): 
298.89

    Ending stage: 
Roadian

    Fraction up in the ending stage: 
1.0

    Ending date (Ma):  
269.21

Depositional setting


Depositional pattern:  


Additional Information


Compiler:  

From S. Z. Jassim and J. C. Goff, Geology of Iraq, 2006. pg 156, Fig. 14-2: "Stratigraphic correlation of formations of Megasequence AP11 (Excluding the Quaternary)."