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Harmosh formation
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Harmosh formation
Northern Indus Suture · Nanga-Parbat-Harmosh Massif
Stratigraphic position
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.
The amphibolite-grade gneiss and schist of the Nanga Parbat–Haramosh Massif — Indian-plate basement.
Harmosh formation named after the Harmosh Range and consists of amphibolite,-grade biotite schist and gneiss, marble, calc-silicate gneiss and amphibolite. The age is Late Proterozoic (Madin et al. 1989). Shingus gneiss is named after Shingus village in the Indus gorge and consists of amphibolite-grade biotite gneiss, amphibolite, calc-silicate gneiss, biotite schist and marble (Madin et al. 1989). . 2600-2200 Ma Proterozoic
Significance. The amphibolite-facies crystalline schist-and-gneiss sequence of the Nanga Parbat–Haramosh Massif, part of the Precambrian Indian-plate basement re-exposed in the massif; it corresponds to the Nanga Parbat Group of Madin (1986).
- Lithology
- Amphibolite-grade biotite schist and gneiss, marble, calc-silicate gneiss and amphibolite.
- Type locality
- Harmosh (Haramosh) Range, Gilgit District
- Basin
- Northern Indus Suture
- Region
- Nanga-Parbat-Harmosh Massif
- Environment
- metamorphic
Provinces
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
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