Pakistan Stratigraphy · stratigraphy.pk
Thelichi formation
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Thelichi formation
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.
The Cretaceous upper Jaglot Group of the Kohistan arc — slates, marbles and metavolcanics, equivalent to the Yasin Group.
Thelichi formation is named by Tahirkheli (1982) and consists of slates, marbles, metavolcanics and laminated sandstone of Middle Cretaceous to Lower Late Cretaceous. It is correlated with Yasin group of Hunza valley. Kalam group (Cretaceous) metasedimentary vast sequence named by Matsushita (1965) after Kalam area. Tahirkheli (1979) divided this group into Karandoki slates, Besham Banda limestone and Shou quartzites.
Significance. The upper part of the Jaglot Group of the Kohistan arc, recording Cretaceous arc volcanism and marine sedimentation; correlated with the fossiliferous Yasin Group of the Hunza valley.
- Lithology
- Slates, marbles, metavolcanics and laminated sandstone.
- Basin
- Kohistan-Ladakh Magmatic Arc
- Region
- Northern Greenstone Belt
- Environment
- volcanic-arc, marine
- Introduced by
- Tahirkheli (1982)
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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