Biostratigraphy Study of Planktonic Foraminifera in Shiranish Formation and the Contact with Aaliji Formation in Qaiyarah Well No. 54 North Iraq.

Abstract

Planktonic Foraminifera is studied from Shiranish Formation in Qaiyarah Well No. 54 North Iraq between the depth interval (451-767)m, Three biostratigraphy zones are recognized in the formation as arranged from bottom to top:1. Globotruncanita calcarata Total Range Zone. 2. Globotruncana aegyptiaca Interval Zone. 3. Gansserina gansseri Total Range Zone.The result of this study are compared with the work of others inside and out side Iraq , The age of the Shiranish Formation in the said well is Early Late Campanian to Earliest Maastrichtian.