Middle Miocene deposits reveal the form of outcrops which are limited in area on
the northern boards of the basin of AL-KABEER Al-Shemaly River. It is characterized by
a large and fast changes in thickness and facies.
This study focused on the res
ults of careful Fossile analysis of 41 samples (hard and
soft) which were taken from the three geological sections, through which the principal
zones, which characterize middle Miocene, were confirmed depending on planktonic
foraminifera.
N9, -Orbulina suturalis-Globerotalia peripheroronda
N10-N13-Globerotalia fohsi, Sphaaerodinellopsis subdehiscens- Globigrina drury ,
N14 – Globigerina nepenthes- Globerotalia siakensis.
It was identified as benthic foraminifera, which has been characterized by its
diversity and their increasing numbers in the northern boards of the Neogene basin and
identify the lithology of these deposits consisting of alternations of limestone and
limestone of medium hardness to very soft marl with different colors.
This study also contributed to the detection of some paleogeographical development
in the basin in that period of time.
