| Geophysical investigation of obot ekpo landslide site, Cross River state, Nigeria AE Akpan, AO Ilori, NU Essien Journal of African Earth Sciences 109, 154-167, 2015 | 43 | 2015 |
| Petroleum geochemistry of Cretaceous outcrops from the Calabar Flank, southeastern Nigeria BO Ekpo, N Essien, EP Fubara, UJ Ibok, EJ Ukpabio, H Wehner Marine and Petroleum Geology 48, 171-185, 2013 | 32 | 2013 |
| Preliminary organic geochemical appraisal of Cretaceous rock units in the Calabar Flank, southeastern Nigeria NU Essien, EJ Ukpabio, EE Nyong, KA Ibe Journal of mining and Geology 41 (2), 185-191, 2005 | 24 | 2005 |
| Litho-stratigraphic revision for the Calabar Flank, SE Nigeria SW Petters, EE Nyong, EB Akpan, NU Essien Proceedings of the 31st anniversary conference of Nigeria Mining and …, 1995 | 20 | 1995 |
| Geochemical fingerprinting of western offshore Niger Delta oils BO Ekpo, N Essien, PA Neji, RO Etsenake Journal of Petroleum Science and Engineering 160, 452-464, 2018 | 19 | 2018 |
| Geochemistry and organic petrography of Cretaceous sediments of the Calabar Flank, southeastern, Nigeria BO Ekpo, UJ Ibok, N Essien, H Wehner Marine and petroleum geology 35 (1), 252-268, 2012 | 16 | 2012 |
| Lithostratigraphic revision for the Calabar Flank SW Petters, EE Nyong, EB Akpan, NU Essien 31st Conference of Nigerian Mining and Geosciences Society, Abstract, 54, 1995 | 15 | 1995 |
| Geochemistry of sandstones of Awi Formation, southeastern Nigeria: Implications for weathering, provenance and tectonic settings EE Okon, NU Essien, GO Adeyemi International Journal of Science and Technology 6 (4), 742-755, 2017 | 11 | 2017 |
| Lithostratigraphic revision for the Calabar Flank, Southeast Nigeria SW Petters, EE Nyong, EB Akpan, NU Essien Proceedings of the 31st annivesary conference of Nigeria mining and …, 1995 | 11 | 1995 |
| Age of the mfamosing limestone, calabar flank, South Eastern, Nigeria NU Essien, DO Ufot Int. J. Basic Appl. Sci 10 (5), 8-19, 2010 | 10 | 2010 |
| Sedimentary processes and depositional environments of part of the Benin Formation in the Calabar Flank, Southeastern Nigeria N Essien, E Okon British Journal of Applied Science & Technology 18 (5), 1-10, 2016 | 8 | 2016 |
| Textural characteristics and depositional processes of sediments from a 47 km transect in the Niger Delta, Southern Nigeria NU Essien, AO Ilori, EE Okon, SN Njoku Journal of Geography, Environment and Earth Science International 7 (1), 1-11, 2016 | 7 | 2016 |
| Depositional processes and provenance determination using grainsize analysis and heavy mineral assemblages of surficial sediment and stream sediment samples from Iwere-Ile and … EE Okon, NU Essien International Journal of Scientific and Engineering Research 6 (11), 1238-1246, 2015 | 7 | 2015 |
| Lithostratigraphy, Microfacies Succession, Sequence Stratigraohy and Depositional Environment of The New NETIM Formation, Calabar Flank, South Eastern Nigeria. NU Essien, ED Bassey IJBAS 12, 6-19, 2012 | 6 | 2012 |
| Geological excursion guidebook to the Cretaceous of the Calabar Flank, Southeast Nigeria SW Petters, PMP Zaborski, NU Essien, KD Nwokocha, DO Inyang Nigerian Mining and Geosciences Society 46th Annual Conference‟ Calabar 28, 2010 | 5 | 2010 |
| Dry season physicochemical characteristics of a tropical meso-tidal estuary: Cross River estuary, southeast Nigeria CN Emeka, VI Emeka, EB Akpan, NU Essien, FM Nwosu Global Journal of Geological Sciences 21 (2), 183-200, 2023 | 4 | 2023 |
| Cretaceous sediments in the Calabar Flank in Geological excursion guidebook SW Petters, PMP Zarboski, NU Essien, KD Nwokocha, D Inyang Proceedings of the 46th Annual Conference of the Nigerian Mining and …, 2010 | 4 | 2010 |
| The Geology and Structural Evolution of the Aningeje Metasediment in the Lower Part of Oban Massif, South-Eastern Nigeria P Momta, N Essien Journal of Geography, Environment and Earth Science International 4 (1), 1-16, 2016 | 3 | 2016 |
| Pebble morphometric analysis of the basal section of the Awi Formation, Calabar Flank, Southeast Nigeria NU Essien, AE Itam, AA Oyama, VN Obim International Journal of Recent Trends in Engineering and Research, 208-218, 2016 | 3 | 2016 |
| Mfamosing limestone: A mid–Albian carbonate platform in south-eastern Nigeria. University of Calabar NU Essien Unpublished Ph. D. Thesis, 1995 | 3 | 1995 |
