Zubair Fm
Period:
Cretaceous
Age Interval:
Hauterivian – Aptian, Sr1, Kw1, Iq (2,3)
Province:
Syria, Kuwait, Iraq
Type Locality and Naming
Column: Syria, Column: Kuwait, Column: Central Iraq, Column: Rutba Uplift (W Iraq); Upper formation in Thamama Gr in Kuwait
Synonym:
Lithology and Thickness
This formation is 380-400m of alternating shale, siltstone, and sandstone. It is thickest in Southern Iraq. Consists of almost entirely shale near Dujaila in Central E Iraq.
Lithology Pattern:
Sandy claystone
Relationships and Distribution
Lower contact
Regionally, the schematic strat column indicates the next older unit as Qamchuka Fm. In Kuwait, it is Ralawi Fm. In Iraq it is Ratawi Fm
Upper contact
Regionally, the schematic strat column indicates the next younger unit as Shu'aiba Fm.
Regional extent
GeoJSON
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Fossils
Age
Hauterivian – Aptian
Age Span:
Beginning stage:
Hauterivian
Fraction up in beginning stage:
0.7
Beginning date (Ma):
128.33
Ending stage:
Aptian
Fraction up in the ending stage:
0.4
Ending date (Ma):
118.12
Depositional setting
Deposited during a lowstand, as a clastic inner shelf (Deltaic facies).
Depositional pattern:
Additional Information
Compiler:
From Middle East Geological Timescale 2008 Al-Husseini, Journal of Middle East Petroleum Geosciences v 13, no. 4. Geology of Iraq pg. 125, 127, 129-130.