Paleocene depositional environments and depositional sequences in the Dababiya Quarry Corehole (Egypt)

摘要

The Paleocene interval of the Dababiya Quarry Corehole (DQC) (at Dababiya, near Luxor, Egypt) comprises mainly hemipelagic sediments (calcareous claystone, marl and chalk), deposited in outer neritic to upper bathyal environments on the southern margin of Tethys. The earliest Danian is however represented by dark gray claystone deposited in shallower, mid neritic environments. The greatest water depths were reached in the mid-Thanetian. The principles of identifying sequences and sequence tracts in hemipelagic settings are summarised. Nine depositional sequencesare tentatively differentiated at Dababiya, based mainly on sedimentology, gamma-ray and magnetic susceptibility logs and foraminiferid assemblages. Comparisons are made with depositional sequences differentiated in other low and mid-latitude areas.