Chia Gara Fm
Period:
Jurassic
Age Interval:
Tithonian, Iq4
Province:
Iraq
Type Locality and Naming
Column: N Iraq
Synonym:
Lithology and Thickness
Comprises thin bedded limestone and calcareous shale, with a consistent bullion zone and Phacoid beds at the base. clayey limestone and marl, interbedded with shale prevail in the upper part of the formation.
Lithology Pattern:
Clayey limestone
Relationships and Distribution
Lower contact
Regionally, the schematic strat column indicates the next older unit as Basarin Fm
Upper contact
Regionally, the schematic strat column indicates this is the youngest unit in N Iraq
Regional extent
GeoJSON
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Fossils
Age
Tithonian
Age Span:
Beginning stage:
Tithonian
Fraction up in beginning stage:
0.3
Beginning date (Ma):
147.40
Ending stage:
Tithonian
Fraction up in the ending stage:
0.5
Ending date (Ma):
146.17
Depositional setting
Depositional pattern:
Additional Information
Compiler:
From S. Z. Jassim and J. C. Goff, Geology of Iraq, 2006. pg 117, Fig. 10-1: "Stratigraphic correlation of Megasequence AP7."