Stratigraphic control for the age of Peshawar-Plain magmatism, northern Pakistan

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Authors:Khan, Said Rahim; Khan, M. Asif; Nawaz, Rab; Karim, Tahir
Author Affiliations:Primary:
Geoscience Laboratories, Islamabad, Pakistan
Other:
University of Peshawar, Pakistan
Geological Survey of Pakistan, Pakistan
Volume Title:Proceedings of the Second Pakistan geological congress; Part 1
Volume Authors:Majid, Mohammad, editor; Jan, M. Qasim; Khan, M. Javed
Source:Geological Bulletin, University of Peshawar, Vol.23, p.253-263; Second Pakistan geological congress, Baragali, Pakistan, Sept. 2-4, 1990, edited by Mohammad Majid, M. Qasim Jan and M. Javed Khan. Publisher: University of Peshawar, Department of Geology, Peshawar, Pakistan. ISSN: 0367-4045
Publication Date:1990
Note:In English. 29 refs.; illus., incl. strat. col., geol. sketch map
Summary:Recent mapping and stratigraphic analyses in the area at the north-eastern edge of the Peshawar plain has resulted in the recognition of a bimodal suite of basic and acidic volcanics. These volcanics occupy specific stratigraphic horizons in the Jafar Kandao Formation, whose age is well constrained between Carboniferous and Early Permian, on the basis of conodont studies. It is suggested that the basic volcanics are extrusive equivalents of the extensive suite of basic dykes and sills found in the internal zone of the Indian plate, while the acid volcanics are counterpart of the A-type granites of Warsak, Ambela, and Shewa-Shahbazgarhi. This study provides a stratigraphic control for the age of the Peshawar-plain magmatism.
Subjects:A-type granites; Carboniferous; Cartography; Chronostratigraphy; Conodonta; Dikes; Granites; Igneous rocks; Indian Plate; Intrusions; Lava flows; Lithostratigraphy; Lower Permian; Magmatism; Microfossils; Paleozoic; Permian; Plate tectonics; Plutonic rocks; Sills; Volcanic rocks; Asia; Indian Peninsula; Pakistan; Jafar Kandao Formation; Northern Pakistan; Peshawar Plain
Coordinates:N341500 N343000 E0723000 E0721500
Abstract Numbers:94M/2422
Record ID:2000022744
Copyright Information:GeoRef, Copyright 2020 American Geosciences Institute.
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