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ABSTRACT
Biostratigraphic study is carried out on the basis of the fossil content of sediments. A total of twenty-five (25) ditch cutting samples from LU-well were provided for palynological analysis between interval 7250-10400ft with the aim of carrying out a detailed palynomorph biostratigraphic analysis of the well. The sediments were treated in the laboratory to concentrate the palynomorphs and promote their microscopic observation. Palynomorphs recovered from the sediments of well LU-well in the Niger Delta Basin are assigned Late Eocene age based on co-occurrence of stratigraphic markers like Monocolpites sp., Psilatricolporitescrassus, Retibrevitricolporites obodoensisand pteridophytic spores which include Acrostichumaureum, Laevigatosporites sp., Verrucatosporites sp. And Polypodiaceoisporites sp. This suggests that the studied section was deposited in a predominantly terrestrial to brackish water swamp environment.Palynological zonation of the well was based on the first downhole occurrence and last downhole occurrence of chronostratigraphically significant species. The well has been broadly assigned to the P470, P480, P520-P540, P560 palynological zones. The palynofloral analysis yielded a rich recovery of palynomorphs dominated by Verrucatosporitesusmensis-Magnastriatiteshowardi. The index minerals include quartz, carbonates. Some suggested works include Biostratigraphy and sequence stratigraphy of the deep offshore Niger Delta and implications for future hydrocarbons exploration in the Paleogene sequences by Bertram Maduka Ozumba and Chidozie Izuchukwu Princeton Dim (2021) and High-Resolution Biostratigraphic Studies of Step-1 Well, Offshore, Western Niger Delta, Materials and Geoenvironment 67(3) by Matthew Nton and S.O. Famori (2021)
