Volume 91, Issue 3 pp. 1063-1078
Original Articles
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A Periglacial Palaeoenvionment in the Upper Carboniferous–Lower Permian Tobra Formation of the Salt Range, Pakistan

Irfan U. JAN

Irfan U. JAN

National Centre of Excellence in Geology, University of Peshawar, Pakistan

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Shahid IQBAL

Corresponding Author

Shahid IQBAL

Department of Earth Sciences, Quaid-i-Azam University Islamabad, Pakistan, 45320

Department of Geodynamics and Sedimentology, University of Vienna, Austria

Corresponding author. E-mail: [email protected]Search for more papers by this author
Sarah J. DAVIES

Sarah J. DAVIES

Department of Geology, University of Leicester, University Road Leicester, LE1 7RH UK

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Jan A. ZALASIEWICZ

Jan A. ZALASIEWICZ

Department of Geology, University of Leicester, University Road Leicester, LE1 7RH UK

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Michael H. STEPHENSON

Michael H. STEPHENSON

British Geological Survey, Keyworth, Nottingham, NG12 5GG UK

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Michael WAGREICH

Michael WAGREICH

Department of Geodynamics and Sedimentology, University of Vienna, Austria

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Muhammad HANEEF

Muhammad HANEEF

Department of Earth Sciences Comsats Institute of Technology, Abbottabad

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Muhammad HANIF

Muhammad HANIF

National Centre of Excellence in Geology, University of Peshawar, Pakistan

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Sajjad AHMAD

Sajjad AHMAD

Department of Geology, University of Peshawar

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First published: 05 July 2017
Citations: 6

About the first author:

Dr. Irfan U. Jan has completed BSc, and MSc. from Pakistan and PhD in terrestrial palynology and clastic sedimentology from the Department of Geology, University of Leicester, United Kingdom. Previously attached with Geo-Services East, UAE, Dr. Jan is currently working as an Assistant Professor at the NCE in Geology, University of Peshawar, Pakistan. His research interests incorporate the stratigraphic and sedimentological investigation of the Permian-Triassic and Jurassic successions of Pakistan. He has published numerous papers in the international well-reputed impact factor journals, and has attended and delivered the outcomes in several international conferences in Portugal, Poland, London, Italy and Greece. Among the international awards he received, the most noteworthy are; 1. British Geological Survey, UK's BUFI award for analytical research work at the University of Leicester, United Kingdom, 2. University of Leicester funds for analytical work during PhD, 3. Geological Society of London Edmund Johnson's funds for best PhD project in the Tethyan sedimentology and palaeontology in 2010, substituted by a one year fellowship of this oldest and prestigious geological society of the world and free access to the society's research journals, 4. UK-IODP steering committee funding to attend summer school at Urbino Italy in 2008 and 2009, 5. International Federation of the Palynological Societies fund to present at the 3rd International Palaeontological Congress, 28th June to 3rd July, 2010, London, UK. Dr. Jan is also working as an Editor of the “Journal of Himalayan Earth Sciences” and he manages several international collaborative research projects with researcher from United Kingdom, Canada, Austria and India and has been rated as the youngest productive scientist of 2014 by the Pakistan Academy of Sciences, whereby he received Dr. Shah Jehan Gold Medal Award in Earth Sciences-2014. Dr. Jan is member of several professional societies namely; the Geological Society of London (GSL), the British Micropalaeontological Society (TMS), the Palaeontological Association (PALASS), the Commission Internationale de la Microflora du Palaeozoique (CIMP), the Society of Petroleum Engineers (SPE), the Asian Council of Science Editors (ASCE) and the Association of Professional Engineers and Geoscientists of Alberta, Canada.

Abstract

The Upper Carboniferous–Lower Permian (Upper Pennsylvanian–Asselian) Tobra Formation is exposed in the Salt and Trans Indus ranges of Pakistan. The formation exhibits an alluvial plain (alluvial fan–piedmont alluvial plain) fades association in the Salt Range and Khisor Range. In addition, a stream flow facies association is restricted to the eastern Salt Range. The alluvial plain facies association is comprised of clast-supported massive conglomerate (Gmc), diamictite (Dm) facies, and massive sandstone (Sm) lithofacies whereas the stream flow-dominated alluvial plain facies association includes fine-grained sandstone and siltstone (Fss), fining upwards pebbly sandstone (Sf), and massive mudstone (Fm) lithofacies. The lack of glacial signatures (particularly glacial grooves and striations) in the deposits in the Tobra Formation, which are, in contrast, present in their time-equivalent and palaeogeographically nearby strata of the Arabian peninsula, e.g. the Al Khlata Formation of Oman and Unayzah B member of the Saudi Arabia, suggests a pro- to periglacial, i.e. glaciofluvial depositional setting for the Tobra Formation. The sedimentology of the Tobra Formation attests that the Salt Range, Pakistan, occupied a palaeogeographic position just beyond the maximum glacial extent during Upper Pennsylvanian–Asselian time.

 

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