Fort Munro Fm
Type Locality and Naming
Holotype section: Western flank of Fort Munro anticline (along the Fort Munro - D.G. Khan Road). Author: M. D. Williams, 1959. Reference section: None.
Lithology and Thickness
Limestone. It typically consists of limestone. The limestone is dark grey to black, very hard, thick bedded, commonly sandy in the upper part and argillaceous in the lower part.
Thickness: 44-100 m. At the type section it is 100 m thick, 53 m in northeast of Pui, 44 m at Murree Brewery section (near Quetta) and 90 m in Bara Nai.
Relationships and Distribution
Lower contact
Conformably underlain by Moghal Kot Fm . However, where the Moghal Kot Fm is not developed (Bolan Pass), it unconformably overlies Parh Limestone Fm.
Upper contact
Conformably overlain by the Pab Sandstone Fm
Regional extent
The formation is widely exposed in the Sulaiman Province, parts of the Kirthar Province (Laki anticline) and the Axial Belt (Quetta region).
GeoJSON
Fossils
On the basis of the presence of Actinosiphon punjabenesis, Orbitoides media, Siderolites sp. a Maastrichtian age is assigned in the Kirthar Province by Williams (1959). Marks (1962) assigned middle or late Campanian age to the formation in Rakhi Nalla on the basis of Orbitoided tissoti minima found at its base.
Age
Depositional setting
Additional Information