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GEOREF RECORD

The Ordovician of the Middle East (Iran, Afghanistan, Pakistan)

Mansoureh Ghobadi Pour and Leonid E. Popov
The Ordovician of the Middle East (Iran, Afghanistan, Pakistan) (in A global synthesis of the Ordovician system; part 2, T. Servais (editor), David A. T. Harper (editor), Bertrand Lefebvre (editor) and I. G. Percival (editor))
Special Publication - Geological Society of London (November 2022) 533: 279-312

Abstract

Ordovician studies in Iran have shown significant progress since the beginning of the century. A number of individual faunas have been documented and a biostratigraphical framework based on conodonts, chitinozoans, acritarchs and trilobites developed. Correlation of Ordovician successions with the International Chronostratigraphic Chart has been significantly improved, and the position of the series and stage boundaries can be recognized with greater precision. While geographical proximity to temperate latitude Gondwana is apparent for most Iranian terranes, biogeographical links of Alborz and Kopet-Dagh with South China prevailed through the Early-Middle Ordovician. In Pakistan, Ordovician deposits have a restricted distribution in the Karakorum block (Chitral). Here they are represented by the Yarkhun and Vidiakot formations with Floian-Darriwilian acritarchs, chitinozoans and early Darriwilian conodonts. In Peshawar District of the North-West Frontier Province, an Early-Middle Ordovician age is likely for the Misri Banda Quartzite with Cruziana rugosa trace fossils. It is overlain conformably by carbonates of the Panjpir Formation, which has an inferred Middle Ordovician-Silurian age. Presently available information on the Ordovician of Afghanistan is mostly based on reconnaissance studies performed almost half a century ago, and a few monographed Early and Late Ordovician faunas.


ISSN: 0305-8719
EISSN: 2041-4927
Coden: GSLSBW
Serial Title: Special Publication - Geological Society of London
Serial Volume: 533
Title: The Ordovician of the Middle East (Iran, Afghanistan, Pakistan)
Title: A global synthesis of the Ordovician system; part 2
Author(s): Ghobadi Pour, MansourehPopov, Leonid E.
Author(s): Servais, T.editor
Author(s): Harper, David A. T.editor
Author(s): Lefebvre, Bertrandeditor
Author(s): Percival, I. G.editor
Affiliation: Golestan University, Department of Geology, Faculty of Sciences, Gorgan, Iran
Affiliation: University of Lille, Lille, France
Pages: 279-312
Published: 20221122
Text Language: English
Publisher: Geological Society of London, London, United Kingdom
References: 185
Accession Number: 2023-042138
Categories: Stratigraphy
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. strat. cols., geol. sketch map
N28°00'00" - N34°00'00", E54°00'00" - E60°00'00"
Secondary Affiliation: National Museum of Wales, GBR, United Kingdom
Country of Publication: United Kingdom
Secondary Affiliation: GeoRef, Copyright 2025, American Geosciences Institute.
Update Code: 202327

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