Abstract:
Darnah Formation at Wadi Ekhil in Daryanah- Al Abyar area, Al Jabal al Akhdar, Northeast Libya
has been subjected to micropaleontological and biostratigraphical analyses based on larger
foraminifera "Nummulites" which has largely used as a time marker in the Tethyan region (Circum-Mediterranean). Taxonomical measurements were performed during this study from
which the following five species were identified, Nummulites gizehensis, N. lyelli, N. beaumonti,
N. striatus and N. sp.
The studied sections assigned to the i) N. gizehensis biozone Late Eocene "Late Lutetian" age
due to the acme occurrence of the zonal marker species N. gizehensis; and ii) N. lyelli biozone
Late Eocene “Biarritzian" due to the total range of the zonal marker species N. lyelli. The concerned nummulites-bearing sections of Darnah Formation indicate an inner neritic environment of bank settings as indicated by A/B ratio
