Cenozoic • Paleogene

Drug Formation

Middle Eocene

Stratigraphic position

In the Sulaiman Fold Belt column

LimestoneShale / mudSandstoneFossils 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.

An Early Eocene limestone of the Ghazij Group, lying between the Shaheed Ghat shale and the Toi sandstone.

Part of Kahan Group. Marine limestone sequence representing Middle Eocene transgression. Contains walking whale fossils.

Significance. An Early Eocene limestone within the Ghazij Group of the Sulaiman Range, between the Shaheed Ghat and Toi formations.

Lithology: Largely orange, pale-olive to greenish-grey limestone interbedded with subordinate shale.
Thickness: 40–340 m
Type locality: Drug Tangi, 3 km northeast of Drug village
Environment: marine
Introduced by: Shah (1987)
Economic importance: Paleontological heritage - whale evolution

Fossils

Walking whales (Ambulocetus)BasilosauridsLarger foraminifera

Provinces

Sulaiman Fold 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: high

Related units

Below · older

Shaheed Ghat Formation

Paleogene

Above · younger

Toi Formation

Paleogene