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Khasib Formation
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Khasib Fm base reconstruction

Khasib Fm


Period: 
Cretaceous

Age Interval: 
Turonian – Coniacian, Iq3


Province: 
Iraq

Type Locality and Naming

Column: Central Iraq

Synonym:


Lithology and Thickness

Lower part consists of dark grey and greenish grey shales, and grey, fine-grained, clayey limestones. The upper part comprises grey, fine-grained clayey limestones. The thickness of the formation is highest in S Iraq, at 225m in the Zubair oil field.


Lithology Pattern: 
Clayey limestone


Relationships and Distribution

Lower contact

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

Upper contact

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

Regional extent


GeoJSON

{"type":"Feature","geometry":{"type":"MultiPolygon","coordinates":[[[[42.42,37.07],[43.76,36.44],[44.08,35.68],[43.17,35.17],[42.06,34.67],[39.94,32.63],[39.46,32.73],[39.28,32.45],[39.42,32.14],[39.97,32.04],[40.04,32.09],[40.04,32.34],[42.7,30.81],[44.68,29.26],[46.51,29.12],[47.22,30.15],[48.23,30.02],[48.38,30.15],[48.02,30.47],[47.99,30.95],[47.67,30.97],[47.84,31.83],[46.46,32.88],[46.07,32.97],[45.39,33.98],[45.79,35.12],[44.62,36],[43.2,37.3],[42.42,37.07]]]]}}

Fossils


Age 

Late Turonian – Coniacian

Age Span: 

    Beginning stage: 
Turonian

    Fraction up in beginning stage: 
0.6

    Beginning date (Ma): 
91.19

    Ending stage: 
Coniacian

    Fraction up in the ending stage: 
0.9

    Ending date (Ma):  
86.07

Depositional setting


Depositional pattern:  


Additional Information


Compiler:  

From S. Z. Jassim and J. C. Goff, Geology of Iraq, 2006. pg 124, Fig. 11-1: "Stratigraphic correlation of formation of Megasequence AP8."