Upper Paleocene-lower Eocene planktonic foraminiferal biostratigraphy of the Qreiya (Gebel Abu Had) section, Upper Nile Valley (Egypt)

Abstract

We describe the upper Paleocene-lower Eocene planktonic foraminiferal biostratigraphy at Qreiya (southeastern exposure of Gebel Abu Had), about 50km ENE of Qena, Egypt. The~54m thick section spans the Tarawan Chalk (~8.6m thick; Zone P4a+b) and the Esna Shale (~45m thick; Zones P4c-P7, partim). The Tarawan/Esna contact is paraconformable, and coincident with the NP8

Late Palaeocene to Early Eocene biostratigraphic framework from Upper Indus Basin, Pakistan, Eastern Tethys

“…This CIE is also coincident with the boundary between SBZ 4 and SBZ 5 of the larger foraminiferal realm, and an event known as Larger Foraminiferal Turnover (LFT) is also associated with this zonal boundary, which is used as P-E boundary criterion within carbonate platforms (Hottinger, 1998;Orue-Etxebarria et al, 2001;Pujalte et al, 2003;Scheibner et al, 2005;Scheibner & Speijer, 2009). In the pelagic environment, the CIE coincides with the planktic foraminifera excursion taxa (PFET) during PETM, the time for the diversification of Morozovella and Acarinina, for example, Acarinina sibaiyensis, Acarinina africana, and Morozovella allisonensis (Kelly et al, 1996;Lu et al, 1996;Kelly et al, 1998;Cramer et al, 1999;Norris & Rohl, 1999;Berggren & Ouda, 2003a, 2003bOuda et al, 2003;Berggren et al, 2003: in Aubry et al, 2007. The onset of CIE is placed between the P5 and E1 zones of Berggren and Pearson (2005).…”