Pakistan Stratigraphy · stratigraphy.pk
Gilgit formation
https://stratigraphy.pk/formation/gilgit-formation
Gilgit formation
Jurassic
Kohistan-Ladakh Magmatic Arc · Northern Greenstone Belt
Jurassic in the time scale →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 metamorphosed lower part of the Kohistan arc's Jaglot Group — schists, gneisses and amphibolites of Jurassic(?) age.
Gilgit formation is named by Khan T. et al. (1996) and consists of interlayered sequence of schists, paragneisses and amphibolites may be of Jurassic age. LeFort and Pecher (2001) have included this formation in their Gilgit-Katchura gneisses.
Significance. The lowest, metamorphosed part of the Jaglot Group of the Kohistan island arc; its schists and amphibolites represent deformed arc-basement and volcaniclastic rocks of the intra-oceanic Kohistan arc.
- Lithology
- Interlayered schists, paragneisses and amphibolites (the Gilgit–Kachura gneisses of Le Fort & Pecher).
- Basin
- Kohistan-Ladakh Magmatic Arc
- Region
- Northern Greenstone Belt
- Environment
- volcanic-arc, metamorphic
- Introduced by
- Khan T. et al. (1996)
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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