Inzari Limestone

Northern Indus Suture

Stratigraphic position

In the Khyber–Nowshera Belt column

LimestoneShale / mudFossils recordedConformable

Band colour = period; texture = dominant rock type. Lines between bands mark the contact type. True scale makes height ∝ recorded thickness; hatched = thickness not recorded. Ages approximate, for ordering.

This unit (highlighted) within its province column; faded ends continue above and below. Line style marks the contact type.

A crystalline limestone above the Hisartang quartzite, taken as Early Devonian like the Nowshera Formation.

Inzari Limestone is named after Inzari village by Hussain et al. (1990) for thin bedded, yellow to greenish grey limestone.

Significance. An unfossiliferous crystalline limestone that conformably overlies the Hisartang Formation (its upper contact faulted); Hussain et al. (1990) considered it time-equivalent to the Early Devonian Nowshera Formation.

Lithology: Thin-bedded, yellowish- to greenish-grey crystalline limestone with common dendrites and stylolites.
Type locality: Inzari, Attock-Cherat Range
Basin: Northern Indus Suture
Environment: marine
Introduced by: Hussain et al. (1990)

Provinces

Khyber–Nowshera Belt

References

Malkani, M.S. & Mahmood, Z. (2017). Stratigraphy of Pakistan. Geological Survey of Pakistan, Memoir Vol. 24.
Kazmi, A.H. & Jan, M.Q. (1997). Geology and Tectonics of Pakistan. Graphic Publishers, Karachi.

Reviewer confidence: medium

Related units

Below · older

Hisartang Formation

Ordovician