Pakistan Stratigraphy · stratigraphy.pk
Sharda group
https://stratigraphy.pk/formation/sharda-group
Sharda group
Northern Indus Suture · Hazara Sub-Basin
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 high-grade gneiss-and-marble basement of the Upper Kaghan valley, thrust over the lower-grade Kaghan Group.
Significance. The high-grade (upper-amphibolite-facies) basement–cover sequence of the Upper Kaghan valley, north of the Batal Fault (MCT?), assigned a Middle Proterozoic to Archaean age (Chaudhry and Ghazanfar, 1987) and previously called the Salkhala Formation. It is thrust southward over the lower-grade Kaghan Group, producing an inverted metamorphic sequence, and comprises the Naran and Burawai formations together with the Dadar Granite Migmatite Complex and Saiful Muluk Granite Gneiss.
- Lithology
- High-grade garnetiferous calc-pelitic gneiss, pelitic gneiss (with kyanite and sillimanite), graphitic gneiss and marble, with sheet granites and amphibolite.
- Type locality
- Upper Kaghan valley, north of the Batal Fault
- Basin
- Northern Indus Suture
- Region
- Hazara Sub-Basin
- Introduced by
- Ghazanfar and Chaudhry (1986)
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
Related units
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