Fatha Fm
Period:
Neogene
Age Interval:
Langhian – Tortonian, Iq3
Province:
Iraq
Type Locality and Naming
Column: Rutba Uplift (W Iraq),
Synonym: Lower Fars, also spelled as Fat'ha Fm,
Lithology and Thickness
Former Lower Fars Fm. Comprises from bottom to top: a) Transition beds normally comprising beds of anhydrite, mudstone and thin limestones, b) salty beds comprising anhydrite and halite with beds of siltstone, mudstone, and less frequent limestone beds, c) Seepage Beds comprising anhydrites with beds of siltstone, mudstone and limestone, d) Upper Red Beds comprises red mudstones, siltstones and relatively frequent beds of limestone and anhydrite.
Lithology Pattern:
Evaporite
Relationships and Distribution
Lower contact
Regionally, the schematic strat column indicates the next older unit as Khirish Beds Fm
Upper contact
Regionally, the schematic strat column indicates this is the youngest unit
Regional extent
GeoJSON
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Fossils
Age
Langhian – Tortonian
Age Span:
Beginning stage:
Langhian
Fraction up in beginning stage:
0.47
Beginning date (Ma):
14.97
Ending stage:
Tortonian
Fraction up in the ending stage:
0.2
Ending date (Ma):
10.75
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).