Pakistan Stratigraphy · stratigraphy.pk
Gawuch formation
https://stratigraphy.pk/formation/gawuch-formation
Gawuch formation
Early Cretaceous
Kohistan-Ladakh Magmatic Arc · Northern Greenstone Belt
Cretaceous 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.
A Cretaceous green-phyllite-and-limestone of the Chitral arc, beneath the Purit Formation.
Gawuch formation (2km thick) with Gawuch Gol type section consists of green phyllites and limestone. Toward the base phyllite is intruded by diorite. It is overlain by Purit formation.
Significance. A Cretaceous metasedimentary unit of the Chitral part of the Kohistan–Dir arc, overlain by the Purit Formation and intruded by arc diorites.
- Lithology
- Green phyllites and limestone; intruded near the base by diorite.
- Thickness
- about 2,000 m
- Type locality
- Gawuch Gol
- Basin
- Kohistan-Ladakh Magmatic Arc
- Region
- Northern Greenstone Belt
- Environment
- volcanic-arc, marine
Provinces
References
- Pudsey, C. J. et al. (1985). Gawuch Formation, Kohistan arc cover; Early Cretaceous (Orbitolina).
- Malkani, M. S. & Mahmood, Z. (2017). Stratigraphy of Pakistan. Memoir of the Geological Survey of Pakistan, Vol. 24.
- 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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