Biostratigraphy of upper part of the Kolosh Formation from Sartaq-Bamo area, Northeastern Iraq
BY : Imad Mahmood Ghafor and Kamal Haji Karim*1
1Department of Geology, University of Sulaimani, Sulaimani City
Published in: Journal of Dohuk Universty, vol.2, No.4, 1999
A range of planktonic foranminifera in the upper part of Kolosh Formation from northeastern Iraq is discussed. Based on the evidence of twenty planktonic foranminifera species and subspecies, the upper part of Kolosh Formation ftom Sartak-Bamo area is subdivedd into biozones, these are from bottom to top:
The Globorotalia veascoensis biozone and the Globorotalia wilcoxensis/Globorotalia rex biozone. planktonic foranminifera boizone are corelated wit other areas of iraq and the world. The nature of the contact between Kolosh and Sinjar Formations is discussed lithologically and eviromentally. The represnted age of the upprer par of Kolosh Formation is Late Paleocene to Early Eocene.
Keywords: Bamo mountain, Sartak valley or gorge, Kolosh Formation , Avanah Formation Sinjar Formation, Pila Spi Formation.
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