Chogo Lungma Group
Karakoram-Hindukush Basin · Southern Metamorphic Belt
Cited in 3 sources Last reviewed Jul 16, 2026
- Rank
- group
- Status
- Under review
- Age
- Not recorded
- Named by
- Not recorded
- Type locality
- Confluence of the Bolocho and Chogo Lungma glaciers, near Sost, Hunza valley35.9000°N, 75.0500°E
- Thickness
- Not recorded
- Lithology
- White to greyish-blue, intensely folded marble interbedded with amphibolite; the impure marble carries diopside, phlogopite and grossular garnet, with calc-silicate layers and locally green tremolite.
- Synonyms
- Not recorded
A folded marble-and-amphibolite group of the Chogo Lungma glacier region in Hunza.
Chogo Lungma group of limestone is exposed in the confluence of Bolocho and Chogo Lungma glaciers, near Sost in Hunza valley, Sumayar pluton, Kero Lungma, Berelter and Hoh Lumba valleys and near the mouth of Biofo glacier. It consists of white to grayish blue intensely folded marble, interbedded with amphibolite horizons. The impure marble contains diopside, phlogopite and grossularite garnet and it is interbedded with calc- silicate layers. At places marble shows acid green color due to presence of tremolite (Le Fort and Pechner 2001).
Fossils
Not recorded
Contacts
Not recorded
Distribution & setting
- Basin
- Karakoram-Hindukush Basin
- Region
- Southern Metamorphic Belt
- Depositional environment
- Not recorded
- Coordinates
- 35.9000°N, 75.0500°E
Correlation
Not recorded. Compare this unit against other basins on the correlation panel →
Economic significance
Not recorded
Remarks
A folded marble-and-amphibolite group of the Karakoram metamorphic belt, exposed around the Chogo Lungma glacier and adjacent valleys (Le Fort and Pechner, 2001).
Sources (2)
- Malkani, M.S. & Mahmood, Z. (2017). Stratigraphy of Pakistan. Geological Survey of Pakistan, Memoir Vol. 24.
- OpenStreetMap contributors and GEOnet Names Server (public geographic gazetteers), used to geolocate named GSP type localities to approximate decimal coordinates.
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: Appears in a single-author Geological Survey of Pakistan memoir (Malkani & Mahmood 2017), not cross-confirmed against the Shah lexicon. The Stratigraphic Committee of Pakistan is largely inactive, so documented provenance — not formal ratification — is the available signal.
Cite this unit
Qudsi, L. (2026). Chogo Lungma Group. In Pakistan Stratigraphy Dataset [Data set]. Zenodo. https://doi.org/10.5281/zenodo.21363991
@misc{stratigraphypk_chogolungmagroup,
author = {Qudsi, Lareb},
title = {{Chogo Lungma Group} --- 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/chogo-lungma-group (accessed August 30, 2026).
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