Biostratigraphy of the Gurpi Formation in Sepidan section, Interior Fars basin based on planktonic foraminifera

In this study the biostratigraphy of Upper Cretaceous deposits (Gurpi Formation) in Sepidan section located in the Interior Fars basin (SW Iran) was studied. The Gurpi Formation in Sepidan section consists of 360 m lime shale, argillaceous limestone and shale laid continuously on Ilam Formation and with a paraconformity under Pabdeh Formation. 9 genera and 27 species of planktonic foraminifera have been identified in the Sepidan section. On this basis, the Gurpi Formation in the Sepidan section includes 9 biozones in the Santonian age at the end of Maastrichtian. Biostratigraphy studies indicate that the biozones identified in this section resemble considerably other biozones of the world standard presented for Upper Cretaceous

Biostratigraphy, Gurpi Formation, Interior Fars basin, Upper Cretaceous