ABSTRACT Agricultural productivity in Kenya, as in many developing countries, is significantly affected by rainfall variability. The reliability of the rain for agricultural purposes has reduced in the recent years due to climate variability. In the study area, there is a continued trend of more frequent and intense climate related disasters which is expected to have significant impacts on the livelihood activities. Most studies on the impact of climate variability on farming practices and th...
ABSTRACT The study area is located in Nsukka Local Government Area of Enugu State Nigeria. It lies between latitudes 6° 49' N, and 6° 50' N, and longitudes 7° 15' E, and 7° 21' E respectively. The area is underlain by Nsukka Formation, which is capped by the laterites, and underlain by heterolithic Sandstone / Siltstone layers with some clays or shale at some deeper horizons. Geophysical investigation using Electrical Resistivity and IP methods with ABEM Terameter, SAS 1000, reveal...
Abstract A discussion of somc burial and thermal history modelling techniques is given, together with the applicability of these to some sedimentary basins in Nigeria. The rilcchanisms of basin formation discussed follow the basic concept that basin subsidence is an isostatic response to thinning of the crust and cooling of a thermal anomaly. The rate of subsidence! is mainly a function of thc cooling rate, further modificd by additional load related to replaccrnent of sea water by accumulati...
ABSTRACT Amplitude variation with offset (AVO) attributes analysis, based on integration of geophysical and petrophysical data has become an important and innovative tool for the detection of hydrocarbons in many exploration provinces of the world, including the Niger Delta Basin. The method has been demonstrated to be effective when seismic data processing is carefully done with detailed petrophysical modeling from complete well log suites. However, routine application of the method has fro...
ABSTRACT Investigations were carried out for groundwater potentials and hydro-geochemical characteristics of the Nanka-Oko area and environs, southeastern, Nigeria. The areas are underlain by the Nanka Sands Formation. Data from 14 vertical electrical soundings were interpreted using computer aided techniques (IPI2win software). A total of 16 borehole groundwater samples, were also analyzed for their phys...
ABSTRACT The study area is bounded by latitudes 5027’N and 5034’N, and longitudes 7025’E and 7035’E. It falls within the Northern Niger delta Basin. The aim of this present study is to evaluate the hydrocarbon potentials of the sediments in the area, determine their age and environment of deposition. To achieve this aim, geochemical analysis (TOC and Rock-Eval) and Palynological studies were carried out on fifteen (15) samples. Results from the analysis indicates that the total organi...
ABSTACT The Maas trichian-Pale ocene sediments in Yuli area me composed of the Gombe Sandstone and the Kerri-Kerri Formation. They cover 400 square kilometres have a thichess of more than 100 metres. Six stratigraphic sections were studied, representing the entire stratigraphic succession of the Gombe Sandstone i n the Yuli area, The formation has a thickness of about 30 metres in the studied area. The Gombe Sandstone consists of folded beds of sandstone, siltstone and mudstone. The sandstone...
ABSTRACT Reservoir characterization has taken prominence in hydrocarbon exploration due to its role in proper understanding of the reservoir properties such as lithofacies, and petrophysical parameters, to enhance success in the quantification of the hydrocarbon reserve in place thereby diminishing exploration failures and enhancing successes. This research work is aimed at integrating three-dimensional seismic data and petrophysical log data to characterize reservoirs of interest, map struc...
ABSTRACT Reservoir characterization has taken prominence in hydrocarbon exploration due to its role in proper understanding of the reservoir properties such as lithofacies, and petrophysical parameters, to enhance success in the quantification of the hydrocarbon reserve in place thereby diminishing exploration failures and enhancing successes. This research work is aimed at integrating three-dimensional seismic data and petrophysical log data to characterize reservoirs of interest, map struc...
Abstract This study is a contribution to the understanding of the depositional environment and reservoir architecture of the “JI Field”, Niger Delta Nigeria. The main objective was to integrate sequence stratigraphy and petrophysical evaluation in characterizing the reservoirs encountered in the wells. Well logs from six wells (JI01, JI02, JI03, JI09, JI10 and JI12-ST), biostratigraphic data from two wells (JI01 and JI02) and 3D seismic volume were analyzed to understand the reservoirs c...
ABSTRACT The Niger Delta is located on a typical passive margin with sediment thicknessesin excess of 12 km at the basin center. The combined occurrence of rift structures, basin subsidence, rapid progradation of deltaic systems, development of growth faults and fold thrust belts in the offshore Niger Delta produced a very unique petroleum habitat with different structural styles and play types. Most of the prospects and producing fields in the region are related to faulted structures. Struc...
ABSTRACT The Maastrichian-Paleocene sediments in Yuli area me composed of the Gombe Sandstone and the Kerri-Kerri Formation. They cover 400 square kilometres have a thickness of more than 100 metres. Six stratigraphic sections were studied, representing the entire stratigraphic succession of the Gombe Sandstone in the Yuli area, The formation has a thickness of about 30 metres in the studied area. The Gombe Sandstone consists of folded beds of sandstone, siltstone and mudstone. The sandstone ...
ABSTRACT Schistose rocks from Okene-Lokoja area, SW Nigeria, consist of quartz-biotite schist, quartz muscovite schist, amphibole schist, and quartz schist. Major element compositions (oxide wt. %) of the schists together with their trace element contents (Ba. Ce. Cr. La. Li, Ni, Rb, Sr, V, Y, Zn, and Zr) are presented. The schists (excluding the quartzitic variety) are enriched in SiO,,K,O, Rb and Ba but depleted in total Fe, O. Mno. TiO,, MgO, Ni and Zn compared with rocks of similar compos...
ABSTRACT Twenty-one outcrops of igneous bodies were studied in a small area (ca. 335 sq. km) of folded sediments west of Anyim River in the Lower Benue Rift. The extrusives occur mainly as basaltic to trachybasaltic tuffs and lapilli tuffs. The minor intrusives are found as basaltic and dolerite sills composed essentially of plagioclase (An,,), augite, with or without olivine. The major intrusives are dioritic small bodies considing of sodic plagioclase (An,,), biotite andor hornblende, and ...
ABSTRACT This research work presents findings of the extent and distributions of saline zone and the hydrochemical characteristics of the groundwater of Awe, Keana and Giza areas in the Middle Benue Trough of Nigeria.Staticwater levels(swl) of hand dug wells were measured andthe results used to generate hydraulic head data and hydraulichead map. The static water levels range from 1.0m to 13.5m at Awe, 1.0m to 4.5m at Keana and 2.2m to 9.2m at Giza. The hydraulic head maps for the three areas...