Soltanieh Fm

Period:

Cambrian,

Age Interval:

Ediacaran – Cambrian Stage 2, Ir4

Province:
Iran

Type Locality and Naming

Column: Iran NW - Alborz

Synonym:

Lithology and Thickness

It is further divided into Upper Dolomite Mbr, Upper Shale Mbr, Middle Dolomite Mbr, Lower Shale Mbr, Lower Dolomite Mbr. Thick dolomite unit that forms cliffs in the Soltanieh region of Iran. Over 100m thick, this formation consists of three units: a lower dolomite member which is yellow, well-bedded, and full of chert nodules. The middle Chapoghlu member consists of greenish grey agrilliceous shales and slates. The upper dolomite unit is massive, light gray with common black chert nodules throughout. Stromatolites are fairly common in this formation.

Lithology Pattern:

Coarse-grained Sandstone

Relationships and Distribution

Lower contact

Regionally, the schematic strat column indicates the next older unit as Bayandor Fm

Upper contact

Regionally, the schematic strat column indicates the next younger unit as Barut Fm

Regional extent

GeoJSON

{"type":"Feature","geometry":{"type":"MultiPolygon","coordinates":[[[[61.01,35.91],[56.79,36.94],[52.22,35.37],[47.84,37.15],[46.78,36.27],[47,34.85],[51.69,31.89],[60.86,34.79],[61.01,35.91]]]]}}

Fossils

Age

Ediacaran – Cambrian Stage 2

Age Span:

Beginning stage:

Ediacaran

Fraction up in beginning stage:

0.8

Beginning date (Ma):

558.04

Ending stage:

Cambrian Stage 2

Fraction up in the ending stage:

0.3

Ending date (Ma):

526.60

Depositional setting

Depositional pattern:

Additional Information

Compiler:

Middle East Geological Timescale 2008 Al-Husseini, Journal of Middle East Petroleum Geosciences v 13, no. 4