Biostratigraphy of Planktonic Foraminifera of Aaliji and Jaddala formations (Paleocene – Eocene) in Krikuk Well No. 229/ North Iraq

Abstract

Planktonic foraminifera is studied from Aaliji and Jaddala formations in Kirkuk well No. 229 between the depth interval (545-900)m. Twelve biostratigraphic zones recognized in these stratigraphic succession. These are: 1.Acarinina uncinata Zone (P2).2.Morozovella angulata Zone (P3).3.Globanomalina pseudomenardii Zone (P4).4.Morozovella velascoensis Zone (P5 & P6).5.Morozovella s. subbotinae Zone (P7).6.Morozovella aragonensis / Morozovella f. formosa Zone (P8).7.Acarinina bullbrooki Zone (P10).8.Globigerinatheka s. subconglobata Zone (P11).9.Subbotina frontosa boweri / Morozovella lehneri Zone (P12).10.Globigerinatheka index Zone (P13).11.Truncorotaloides r. rohri Zone (P14).12.Turborotalia cerroazulensis Zone (P15). These biostratigraphic zones are correlated with other zonal schemes inside and out side Iraq. The age of Aaliji formation is Middle Paleocene–Early Eocence and Jaddala formation is Early-Late Eocene