Hartha Fm
Period:
Cretaceous
Age Interval:
Campanian, Iq (2,3)
Province:
Iraq
Type Locality and Naming
Column: Central Iraq, Column: Rutba Uplift (W Iraq)
Synonym:
Lithology and Thickness
Comprises organic detrital and glauconitic limestones with beds of grey and green shale; the limestones are locally strongly dolomitized. Beds of chalky limestone occur frequently. Interfingered with Shiranish. In West Iraq (Rutba Uplift), the formation begins with a Sandstone.
Lithology Pattern:
Clayey limestone
Relationships and Distribution
Lower contact
Regionally, the schematic strat column indicates the next older unit as Sa'di Fm
Upper contact
Regionally, the schematic strat column indicates the next younger unit as Shiranish Fm
Regional extent
The formation is thickest within the Salman Zone, S of Ramadi, at 400m
GeoJSON
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Fossils
Age
Campanian
Age Span:
Beginning stage:
Campanian
Fraction up in beginning stage:
0.5
Beginning date (Ma):
77.91
Ending stage:
Campanian
Fraction up in the ending stage:
0.8
Ending date (Ma):
74.47
Depositional setting
Depositional pattern:
Additional Information
Compiler:
From S. Z. Jassim and J. C. Goff, Geology of Iraq, 2006. pg 141, Fig. 12-1: "Stratigraphic correlation of formations of the Late Early Turonian-Danian Megasequence"