Pakistan Stratigraphy · stratigraphy.pk
Dir group
https://stratigraphy.pk/formation/dir-group
Dir group
Cretaceous–Paleocene
Kohistan-Ladakh Magmatic Arc · Northern Greenstone Belt
Cretaceous–Paleogene 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 Dir Group — the Baraul Banda slate and Utror volcanics — the latest-Cretaceous–Paleocene record of Kohistan-arc volcanism.
Dir group ( Latest Cretaceous-Paleocene) named by Tahirkheli (1979) which include the Baraul Banda slate and Ultor volcanic formation. Baraul Banda slate contains shale, wakes, calcareous beds and some volcanics.
Significance. The latest-Cretaceous–Paleocene arc succession of the Dir–Chitral region, comprising the Baraul Banda slate and the Utror volcanics; records the youngest, waning phase of Kohistan-arc volcanism before final collision.
- Lithology
- Baraul Banda slate (shale, greywacke, calcareous beds and volcanics) and the Utror volcanic formation.
- Basin
- Kohistan-Ladakh Magmatic Arc
- Region
- Northern Greenstone Belt
- Environment
- volcanic-arc, marine
- Introduced by
- Tahirkheli (1979)
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: high
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