Biostratigraphy Study of Planktonic Foraminifera in Shiranish Formation and its Contact with Aaliji Formation in Pulkana Well No. 7 North Iraq

Abstract

Planktonic Foraminifera is studied from Shiranish & Aaliji formations in Pulkana Well No. 7 North Iraq between the depth intervals (1948-2240) m, six biostratigraphy zones are recognized in the formation as arranged from bottom to top: 1. Globotruncanita stuarti-stuartiformis Partial Range Zone. 2. Globotruncana aegyptiaca Interval Zone. 3. Gansserina gansseri Total Rang Zone. 4. Morozovella angulata Partial Range Zone . 5. Globanomalina pseudomenardii Total Rang Zone .