Scientific Quarterly Journal of Geosciences

Scientific Quarterly Journal of Geosciences

Primary palynological study and age determination of Bayandor Formation in Kuh-e-Bayandor at Southern Zanjan City, Northwest Iran

Document Type : Original Research Paper

Author
Mohammad Ghavidel-Syooki
Exploration Division of National Iranian Oil Company, Tehran, Iran
Abstract
A total of 12 samples from the Bayandor Formation (Proterozoic sediments) in Kuh-e-Bayandor Type Section Area at southern Zanjan town, northwest Iran were selected and treated for palynological study. This study was undertaken in order to determine the age relationships of the Bayandor Formation. A Total of 13 acritarch taxa were encountered in the studied samples of this rock unit, including Leiosphaeridia crassa, Leiosphaeridia ternata, Leiosphaeridia jacutica, Synsphaeridium sp., Lophosphaeridium granulatum, Satka squamifera, Pterospermopsimorpha insolita, Arctacellularia ellipsoidea, Arctacellularia tetragonala, Coneosphaera sp., and Oscillatoropsis sp.
     So far, the above- mentioned acritarch and cryptarch taxa have been recorded from Late Riphean sediments of China, Russia, Canada and Africa. Therefore, based on palynological data, Late Riphean age is suggested, for the Bayandor Formation in the Type Section Area.
Keywords
Palynology, Bayandor Formation

Subjects

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Scientific Quarterly Journal of Geosciences
Volume 5, 17-18
Autumn & Winter 1996, Vol. 5, No. 17-18
Winter 1996
Pages 24-29