Skip to content
Pakistan Stratigraphy
Print / Save PDF

Include in printout

Suggest a correction
Mesozoic • Triassic member In GSP lexicon

Landa Member

Triassic

Part of Tredian Formation

Triassic in the time scale →

Cited in 4 sources Last reviewed Aug 10, 2026

Unit summary
Rank
member
Status
Published
Age
Mesozoic · Triassic · TriassicTriassic
Named by
Kummel & Teichert (1966)
Type locality
Not recorded
Thickness
115 ft (35 m) at Spinnagara Nala
Lithology
Fine-grained greenish-gray sandstone, siltstone and green/gray shale; plant fossils common, brachiopods near the top.
Synonyms
Not recorded

Lower member of the Tredian Formation (Kummel 1966): sandstone, siltstone and shale with plant fossils; its base placed at the top of the uppermost Narmia limestone. 115 ft thick at Spinnagara Nala.

Fossils

Not recorded

Contacts

In the Salt Range column
  1. Mittiwali MemberTriassic
  2. Narmia MemberTriassic
  3. Landa Member ◀Triassic
  4. Khatkiara Sandstone MemberTriassic
  5. Tobra FormationFossils recordedPermian
LimestoneSandstoneMixedFossils 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.

Distribution & setting

Salt Range Kohat Basin Potwar Basin
Basin
Not recorded
Region
Not recorded
Depositional environment
Not recorded
Coordinates
Not recorded

Correlation

Not recorded. Compare this unit against other basins on the correlation panel →

Economic significance

Not recorded

Remarks

Not recorded

Sources (5)
  • Hemphill, W.R. & Kidwai, A.H. (1973). Stratigraphy of the Bannu and Dera Ismail Khan Areas, Pakistan. U.S. Geological Survey Professional Paper 716-B, 36 p.
  • Hemphill, W.R. & Kidwai, A.H. (1973). Stratigraphy of the Bannu and Dera Ismail Khan Areas, Pakistan. U.S. Geological Survey Professional Paper 716-B (Geological Investigations in Pakistan), 36 p.
  • Shah, S.M.I. (2009). Stratigraphy of Pakistan. Geological Survey of Pakistan, Memoir Vol. 22.
  • Kazmi, A.H. & Jan, M.Q. (1997). Geology and Tectonics of Pakistan. Graphic Publishers, Karachi.
  • Kazmi, A.H. & Abbasi, I.A. (2008). Stratigraphy and Historical Geology of Pakistan. Department & National Centre of Excellence in Geology, University of Peshawar, Peshawar. 524 pp. ISBN 978-969-9119.

Reviewer confidence: high

Every fact on this page is source-cited. This entry is part of the peer-archived Pakistan Stratigraphy Dataset (doi.org/10.5281/zenodo.21363991, CC‑BY‑4.0).

Lexicon status: Name attested in the Shah (1977/2009) Geological Survey of Pakistan compilation — the national stratigraphic lexicon. This records where the name is documented; it is not an endorsement of the unit’s definition, age or figures.

Cite this unit
APA

Qudsi, L. (2026). Landa Member. In Pakistan Stratigraphy Dataset [Data set]. Zenodo. https://doi.org/10.5281/zenodo.21363991

BibTeX 
@misc{stratigraphypk_landamember,
  author    = {Qudsi, Lareb},
  title     = {{Landa Member} --- Pakistan Stratigraphy Dataset},
  year      = {2026},
  publisher = {Zenodo},
  doi       = {10.5281/zenodo.21363991},
  url       = {https://doi.org/10.5281/zenodo.21363991}
}

Archived dataset: doi.org/10.5281/zenodo.21363991 (CC‑BY‑4.0) · Direct link to this entry: https://stratigraphy.pk/formation/landa-member (accessed September 5, 2026).

To cite the unit's original definition instead, see: Kummel & Teichert (1966).

Below · older

Narmia Member

Triassic

Above · younger

Khatkiara Sandstone Member

Triassic

More from Salt Range

Amb FormationBaghanwala FormationChhidru FormationChichali FormationChinji FormationChorgali FormationDandot FormationDatta Formation
All units in Salt Range →

    Saved on this device only.