Qom Fm
Period:
Paleogene, Neogene
Age Interval:
Rupelian – Burdigalian, Ir (1,2)
Province:
Iran
Type Locality and Naming
Column: Zagros belt (general), Column: Central Iran
Synonym:
Lithology and Thickness
~1200m thick. This formation contains 9 members, which alternate between limestone and shale/claystone. The formation is highly heterogenous, and is the main objective of oil and gas exploration in central Iran.
Lithology Pattern:
Clayey limestone
Relationships and Distribution
Lower contact
Regionally, the schematic strat column indicates the next older unit as Lower Red Fm
Upper contact
Regionally, the schematic strat column indicates the next younger unit as Upper Red Fm
Regional extent
GeoJSON
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Fossils
Age
Rupelian – Burdigalian
Age Span:
Beginning stage:
Rupelian
Fraction up in beginning stage:
0.55
Beginning date (Ma):
30.26
Ending stage:
Burdigalian
Fraction up in the ending stage:
0.95
Ending date (Ma):
16.21
Depositional setting
Depositional pattern:
Additional Information
Compiler:
Middle East Geological Timescale 2008 Al-Husseini, Journal of Middle East Petroleum Geosciences v 13, no. 4. Union Internationale Des Sciences Geologiques pg. 192-197.