Panoba Shale Fm
Type Locality and Naming
Charrat Gr – lowest formation in Kohat-Margala Province (Ko-MP). Holotype section: South of Panoba village. Author: F.E. Eames, 1952. Reference section: None.
Synonym: Panoba Shale
Lithology and Thickness
Gypsiferous claystone. At the type section, it consists of shale with occasional bands of sandstone. The shale is greenish grey to light grey, slightly silty and is calcareous towards the base. In places, greenish alum shale, with ferruginous and calcareous partings and veins of gypsum are common. Flaggy limestone bands occur at different levels. The unit grades into rock salt south of the type section. Gurguri sandstone, a localized unit exposed in western Ko-MP, towards the top of the formation, is not being discussed.
Thickness: 40-160 m. At the type section, it is 100 m thick. It is 40 m at Tarkhobi, and 160 m at Uch Bazar.
Relationships and Distribution
Lower contact
Conformably underlain by Patala Fm
Upper contact
Conformably overlain by Shekhan Fm or Jatta Gypsum Fm or Bahadur Khel Salt Fm in different areas. In western part of Ko-MP, it is unconformably overlain by Kohat Fm.
Regional extent
The formation is confined to the Kohat area (western Ko-MP).
GeoJSON
Fossils
Globorotalia aequa, Assilina pustulossa, Orbitolites complanatus, Nummulites sp. Eponides sp.
Age
Depositional setting
Additional Information