Biostratigraphy and Palaeobathymetry of Gurpi Formation in southwest of Firozabad area

Study of planktonic foraminifera of the Gurpi Formation in southwest of Firouzabad area led to recognition of 13 genera and 29 species of the planktonic foraminifera. Eight biozones were determined in the Gurpi Formation including Dicarinella asymetrica Zone (Santonian to Earliest Campanian), Globotruncanita elevata Zone (Early Campanian), Globotruncana ventricosa Zone (Mid to Late Campanian), Radotruncana calcarata Zone (Late Campanian), Globotruncanella havanensis Zone (Late Campanian), Globotruncana aegyptiaca Zone (Late to Latest Campanian), Gansserina gansseri Zone (Latest Campanian to Early Maastrichtian), Contusotruncana contusa and Racemiguemblina fructicosa Zone (Early to Late Maastrichtian). These biozones are comparable with the newest biozones that are proposed for Tethys realm. The study of planktonic foraminifera led to recognition of three groups of morphotypes indicating that the Gurpi Formation was deposited in deep water environments.