Lalun Sandstone Fm
Period:
Cambrian
Age Interval:
Cambrian Stage 3 - Cambrian Stage 4, Ir (1,2,4)
Province:
Iran
Type Locality and Naming
Column: Zagros belt (general), Column: Central Iran, Column: Iran NW - Alborz
Synonym:
Lithology and Thickness
Thickness of ~600m. Top layers consist of white quartzite, followed by layers of dark-red shales and sandstones, and then a basal layer of pink-red medium-grained arkosic sandstone. Thin lamination, ripple marks, and coarse cross-bedding is prevalent throughout the formation.
Lithology Pattern:
Clayey sandstone
Relationships and Distribution
Lower contact
Regionally, the schematic strat column indicates the next older unit as Zaigun Fm
Upper contact
Regionally, the schematic strat column indicates the next younger unit as Mila Fm
Regional extent
GeoJSON
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Fossils
Unfossiliferous.
Age
Cambrian Stage 3 - Cambrian Stage 4
Age Span:
Beginning stage:
Cambrian Stage 3
Fraction up in beginning stage:
0.2
Beginning date (Ma):
519.70
Ending stage:
Cambrian Stage 4
Fraction up in the ending stage:
0.8
Ending date (Ma):
510.10
Depositional setting
Depositional pattern:
Additional Information
Compiler:
Middle East Geological Timescale 2008 Al-Husseini, Journal of Middle East Petroleum Geosciences v 13, no. 4