Zard Kuh Fm
Period:
Ordovician
Age Interval:
Tremadocian – Darriwilian, Ir1
Province:
Iran
Type Locality and Naming
Column: Zagros belt (general)
Synonym:
Lithology and Thickness
Alternating Sandstone and Claystone.
Lithology Pattern:
Sandstone
Relationships and Distribution
Lower contact
Regionally, the schematic strat column indicates the next older unit as Mila Fm
Upper contact
Regionally, the schematic strat column indicates the next younger unit as Seyahou Fm
Regional extent
GeoJSON
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Fossils
Age
Tremadocian – Darriwilian
Age Span:
Beginning stage:
Tremadocian
Fraction up in beginning stage:
0.25
Beginning date (Ma):
484.41
Ending stage:
Darriwilian
Fraction up in the ending stage:
0.95
Ending date (Ma):
458.74
Depositional setting
Depositional pattern:
Additional Information
Compiler:
Middle East Geological Timescale 2008 Al-Husseini, Journal of Middle East Petroleum Geosciences v 13, no. 4