Barut Fm
Period:
Cambrian
Age Interval:
Cambrian Stage 2, Ir (1,4)
Province:
Iran
Type Locality and Naming
Column: Zagros belt (general), Column: Iran NW - Alborz
Synonym:
Lithology and Thickness
Thickness of over 700m, this formation consists primarily of silty and sandy shales which are purple in color but occasionally transition to green, grey, and black. Limestones are present in the lower part and chert nodules can be found throughout. Fossils include stromatolitic features.
Lithology Pattern:
Sandy_claystone
Relationships and Distribution
Lower contact
Regionally, the schematic strat column indicates the next older unit as Hormuz Salt Fm in Zagros belt (general). Soltanieh Fm in Iran NW - Alborz.
Upper contact
Regionally, the schematic strat column indicates the next younger unit as Zaigun Fm
Regional extent
GeoJSON
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Fossils
Age
Cambrian Stage 2
Age Span:
Beginning stage:
Cambrian Stage 2
Fraction up in beginning stage:
0.3
Beginning date (Ma):
526.60
Ending stage:
Cambrian Stage 2
Fraction up in the ending stage:
0.5
Ending date (Ma):
525.00
Depositional setting
Depositional pattern:
Additional Information
Compiler:
Middle East Geological Timescale 2008 Al-Husseini, Journal of Middle East Petroleum Geosciences v 13, no. 4