Assiut university researches
Planktonic foraminiferal biostratigraphy of the
Paleocene/Eocene boundary interval in the
Dababiya Quarry Corehole, Dababiya, Upper
Nile Valley, Egypt
Khaled Ouda, William A. Berggren and Ayman Abdel Sabour
Abstract:
We report here on the planktonic foraminiferal faunas of the
Paleocene-Eocene boundary interval between 21.15 m
(Tarawan Chalk/Esna Shale 1 boundary; basal Zone P4c)
and the basal part of the MahmiyaMember of Esna Shale Unit
3 (~5-6 m; Zone E2; Lower Eocene) in the Dababiya Quarry
Corehole (DQC). The sequential lower/initial late Paleocene
appearance of several morozovellid and acarininid taxa in the
~ 10 minterval from the top of the Tarawan Chalk (21.15 m) to
the base of the lithologically distinct Dababiya Quarry
Member (11.82 m), the presence of the characteristic PETM
excursion planktonic fauna (Acarinina sibaiyaensis, Ac.
africana and Morozovella allisonensis) within the DBQ Beds
(11.82 m to 9.5 m), the “Eocene flood”of planktonic faunal
elements and the LO/initial appearance of Pseudohastigerna
wilcoxensis in Bed 5 of the DBQ Beds mirrors our earlier
observations in the nearby Dababiya Quarry outcrops and
makes precise correlation between the two sections possible.
Published in:
stratigraphy,Vol. 9, Nos 3–4 ,PP.213–227