Source provenance

Ali, S.K., Janjuhah, H.T., Shahzad, S.M., Kontakiotis, G., Saleem, M.H., Khan, U., Zarkogiannis, S.D., Makri, P. & Antonarakou, A. (2021). Depositional Sedimentary Facies, Stratigraphic Control, Paleoecological Constraints, and Paleogeographic Reconstruction of Late Permian Chhidru Formation (Western Salt Range, Pakistan). Journal of Marine Science and Engineering, 9(12), 1372.

Cited by 1 unit (1 published) · 6 field-level citations · 4 revision notes.

Verified via retrieved content (incl. full author list from cross-referenced citation): Late Permian Chhidru Formation of the western Salt Range (Zaluch Gorge) as a shallow-marine carbonate-siliciclastic succession; upper contact with the Triassic Mianwali Formation carries the Permian-Triassic boundary. Used for Chidru/Chhidru.

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Units citing this source

• Paleozoic Chhidru Formation Permian
  Lower contact (overlies)Upper contact (underlies)Depositional environmentPlain summaryGeological significanceFossils
  • Depositional environment: Ali et al. (2021), facies analysis at Zaluch Gorge (western Salt Range): the Late Permian Chhidru Formation comprises three lithofacies - a limestone facies (CF1), a limestone-with-clay-interbeds facies (CF2) and a sandy-limestone facies (CF3) - and five carbonate microfacies spanning mudstone-biomicrite (MF-1) to packstone-biosparite (MF-5). The assemblage indicates a shallow-marine, middle- to outer-shelf setting deposited within a highstand systems tract (HST). Adds a facies/sequence-stratigraphic characterization of the depositional environment.
  • Depositional environment: Ali et al. (2021), full text: the Chhidru Formation was deposited on a middle-to-inner shelf in a shallow-marine (subtidal-intertidal) setting, at the top of a highstand systems tract (HST). Three lithofacies (CF1 limestone, CF2 limestone with clay interbeds, CF3 sandy limestone) and five microfacies (MF1 mudstone-biomicrite to MF5 packstone-biosparite) were recognised at Zaluch Gorge.
  • Thickness: Ali et al. (2021): measured Chhidru thicknesses vary across the western Salt Range — Zaluch Nala 58.4 m, Zaluch Gorge 63.63 m, Chhidru Nala 81.81 m (compiled after Mertmann 2003; Jan & Stephenson; Hussain et al.). The dataset's ~90 m (60-120 m) is retained as a regional representative; the Chhidru Nala type section is ~82 m.
  • Upper contact (underlies): Ali et al. (2021): the top of the Chhidru Formation marks the Permian-Triassic boundary — a paraconformity of undetermined magnitude beneath the Triassic Mianwali Formation; the lower contact with the Wargal Limestone is conformable (the Wargal/Chhidru boundary approximates the Wuchiapingian/Changhsingian boundary). Uppermost formation of the Tethyan Zaluch Group.