Palynological zonation of Oligocene to Early Miocene sediments of Greater Ughelli Depobelt Niger Delta
Basin was carried out using One hundred and ninety (190) ditch cutting samples ranging from 20ft.-11,820ft. (6.09m-3603.7m), by identifying the different species of palynomorphs present as well as using stratigraphic significant diagnostic
palynomorphs to age date and zone the well section, Nine hundred and sixty four (964) species of palynomorps were
recovered.Nine hundred and fifty four (954) were miospores(pollen and spore) and ten(10) were Dinocysts.The presence of
diagnostic palynomorphs such as
Praedapollis africanus
, Peregrinipollis nigericus
, Retibrevitricolporites obodoensis
aided
in the establishment of the age and three P-zones in the well. The age of the well section range from Oligocene to Early
Miocene.The P-zones established are
P560, P580 and P620 zones. P620 and P580 Zones were lumped together and was
established based on the occurrence of Top
Pradapollis africanus at 4500ft and quantitative base of
Peregrinipollis
nigericus at 7620ft.This zone were lumped together because Top/FDO
Cicatricosisporites dorogenesis
(30)/
Gemmatriporites
sp (573) which represents the base of P620 zone and top of P580 zone were undefined.P560 Zone was defined by the
appearance of quantitative base
Peregrinipollis nigericus at 7620ft and increase
Retibrevitricolporites obodoensis at 11580ft.
