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Sinjar Formation
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Sinjar Fm base reconstruction

Sinjar Fm


Period: 
Paleogene

Age Interval: 
Selandian – Lutetian, Sr1


Province: 
Syria

Type Locality and Naming

Column: Syria

Synonym:


Lithology and Thickness

Limestone, often chalky with occasional flint and glauconite. Nummulitic chalk.


Lithology Pattern: 
Limestone


Relationships and Distribution

Lower contact

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

Upper contact

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

Regional extent


GeoJSON

{"type":"Feature","geometry":{"type":"MultiPolygon","coordinates":[[[[38.53,35.65],[38.21,36.43],[37.97,36.64],[36.66,36.05],[36.14,35.12],[36.42,34.71],[36.88,34.05],[35.98,33.29],[35.99,32.78],[37.34,32.78],[39.72,34],[40.93,35.35],[40.79,36.1],[40.09,36.33],[38.53,35.65]]]]}}

Fossils


Age 

Selandian – Lutetian

Age Span: 

    Beginning stage: 
Selandian

    Fraction up in beginning stage: 
0.6

    Beginning date (Ma): 
60.21

    Ending stage: 
Lutetian

    Fraction up in the ending stage: 
0.35

    Ending date (Ma):  
45.61

Depositional setting

In some areas, formation shows algal reef facies, lagoonal facies, and shoal nummulitic facies. Therefore, it is understood that this formation was deposited not as one continuous shoal or lagoon, but a series of many, separate reef banks and islands.


Depositional pattern:  


Additional Information


Compiler:  

From Middle East Geological Timescale 2008 Al-Husseini, Journal of Middle East Petroleum Geosciences v 13, no. 4. Syrie Inter pg 261-262.