Exploratory assessment of geothermal resources in some parts of the Middle Benue Trough of Nigeria using airborne potential field data

Alfaifi, Hussain J.; Ekwok, Stephen E.; Ulem, Christian A.; Eldosouky, Ahmed M.; Qaysi, Saleh; Abdelrahman, Kamal; Andráš, Peter; Akpan, Anthony E.

doi:10.1016/j.jksus.2022.102521

Cited by 12 publications

(7 citation statements)

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“…The shallow CPD zones (<8.0 km) well-defined by spikes (Figure 7a) correlate positively with the localities of peak GG (Figure 7b and HF (Figure 7c). Based on the previous findings of [30,61], probable geothermal anomalies are defined by a low Curie point depth coexistent with a high heat flow and temperature gradient. In general, the geothermal structures are oriented the E-W direction (Figures 4-6), and they are controlled majorly by the E-W oblique-slip faults [57].…”

Section: Discussionmentioning

confidence: 98%

“…The magnetic method is an essential geophysical tool commonly applied in reconnaissance geothermal energy assessments [29]. Many geoscience researchers have used this strategy to conduct reconnaissance investigations of geothermal energy sources [11][12][13]29,30,60,61]. The rocks in the study area, which exist in the neighbourhood of the Gulf of Aqaba/Dead Sea transform fault, rift-transform triple junction of the Red Sea and Gulf of Suez [62], have been extensively metamorphosed by the Red Sea tectonic events [57].…”

Section: Discussionmentioning

confidence: 99%

“…This technique has been valuable in delineating geothermal reservoirs, basement framework, igneous intrusions [20] and magma chambers interconnected with the geothermal system source of heat [29]. Additionally, the magnetic method can be used to locate regions with diminished magnetization caused by thermal events, hydrothermal system assessment [30], concealed anomalies originated by granitic as well as magmatic structures [16] and associated lineaments [31][32][33]. Over the years, the various procedures involved in magnetic data acquisition, corrections, enhancements, presentations and interpretations have been considerably upgraded [19].…”

Section: Introductionmentioning

confidence: 99%

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Exploratory Mapping of the Geothermal Anomalies in the Neoproterozoic Arabian Shield, Saudi Arabia, Using Magnetic Data

et al. 2023

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In this paper, certain areas of the Kingdom of Saudi Arabia (KSA) are assessed in order to map potential geothermal energy zones. To evaluate high-resolution aerial magnetic data, spectral depth analysis using a modified centroid approach was used. The calculated geothermal parameters were gridded in order to delineate the regions characterised by a shallow Curie point depth (CPD) and a high geothermal gradient (GG) as well as a high heat flow (HF). The CPD, GG and HF calculated from the analysed data varied in the ranges of 6.0–15.0 km, 40.0–100.0 °C/km and 90.0–270.0 mW/m2, respectively. The obtained results show the concurrence of the positions of shallow CPD (<8.0 km), high GG (>83.5 °C/km) and high HF (>211.0 mW/m2). The geothermal systems that are oriented in the E–W direction are related to the Red Sea tectonics, the tectonic opening of the Red Sea/Gulf of the Suez Rift, hot subterranean anomalies and high enthalpy from radioactive granites. Likewise, the geologic structures (fractures and faults) related to the Red Sea tectonics serve as channels for the movement of hydrothermal fluids and the deposition of associated minerals. All in all, another geophysical study involving deep boreholes, and seismic, magnetotelluric, electromagnetic and geochemical data should be conducted to evaluate and estimate precisely the economic reserves of geothermal resources.

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Section: Discussionmentioning

confidence: 98%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Exploratory Mapping of the Geothermal Anomalies in the Neoproterozoic Arabian Shield, Saudi Arabia, Using Magnetic Data

et al. 2023

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“…Of all the geophysical prospecting techniques, the magnetic method is the most flexible, and its maps can display a wide range of local anomalies. Currently, faults, fractures, basement topography, and characterization as well as sediment thickness estimation for groundwater and oil and gas exploration are mapped using the magnetic method [5][6][7][8]. Mapping the hydrogeological environments where water can exist is the primary objective of geophysical investigation in groundwater exploration.…”

Section: Introductionmentioning

confidence: 99%

Groundwater Exploration Within Shallow Depths Around Distinct Litho-Petrological Contact Zones

Ejiga,

Nur,

Izuwa

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

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The world’s increasing demand for freshwater has put a strain on existing reserves in recent years, necessitating further exploration of new groundwater reserves. However, geologic provinces located within the contact boundary of Sedimentary Basin-Basement Complex region are somewhat faced with the problem of shallow sediment thickness. As a result, exploring for groundwater poses a challenge as the sediment thickness might be insufficient to host productive aquifers. Hence, exploring for faults and fractures zones that are embedded on the hard rock underneath the sediment is very essential and complimentary. In this study, high resolution aeromagnetic data over a litho-petrological contact zone of the Middle Benue Trough (MBT) and the Adamawa Massif were analyzed to delineate groundwater exploration areas using a simplified qualitative and quantitative approach. Visual inspection of isolated and aggregate anomalies is performed by analyzing their shapes, dimensions, lateral extents, and discontinuities. Lineaments were then extracted from the residual magnetic map to determine faults, fractures, and joints. A two-source-depth model is indicated by the Spectral Analysis technique used to determine the thickness of the sediments in the area. The deeper source (Z1) has a thickness of 0.9 - 3.6 km, while the shallow source (Z2) has a thickness of 0.1 - 0.8 km. While in some areas the overburden thickness may be sufficient for groundwater exploration, in others it was not, as indicated by the shallow magnetic depth, Z2. Nonetheless, areas of shallow thickness but with aggregates of faults, fractures, and joints were identified as possible locations for groundwater accumulation through magnetic lineament exploration.

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“…Therefore, it is imperative to step up efforts to explore geothermal energy-rich locations in Nigeria. https://www.indjst.org/ Some researchers have deployed aeromagnetic method in search for potential area of geothermal energy at different Basins in Nigeria (1)(2)(3)(4)(5)(6)(7)(8) . Few recent geothermal research has been reported in Upper Benue Trough (9,10) but not in all parts of the Upper Benue Trough.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Geothermal Energy Potential of Parts of Upper Benue Trough Nigeria Using High Resolution Aeromagnetic Data

Abangwu,

Okeke,

Obiora

2023

IJST

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Objective: To conduct geophysical evaluation in Yuli, Futuk, Kaltungo, Guyok, Shellen, Bashar, Muri, Lau, Dong and Numan area Upper Benue Trough, Nigeria to ascertain the region's geothermal energy potential for electricity generation. Methods: Radial average power spectrum method was employed in this research work. The residual upward continued data was divided into twentyseven (27) overlapping spectral block using the filtering feature of the Oasis montaj program. Fast Fourier Transform (FFT) MAGMAP technique of oasis montaj program transformed the data into radial average power spectrum for each block. Findings: The estimated Curie point depth ranges from 10.131 to 16.461 km, the geothermal gradient ranges from 35.235 to 57.250 • C/km having a mean value of 45.214 • C/km while the heat flow ranges from 88.087 to 143.125 mW m −2 . These results shows that the research area has good potential for geothermal energy generation especially the Dong area with the highest geothermal gradient value of 57.250 • C/km. Novelty: This research has successfully employed radial average power spectrum method to depict viable zones of geothermal energy potential in Upper Benue Trough, Nigeria for electricity generation.

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Exploratory assessment of geothermal resources in some parts of the Middle Benue Trough of Nigeria using airborne potential field data

Cited by 12 publications

References 50 publications

Exploratory Mapping of the Geothermal Anomalies in the Neoproterozoic Arabian Shield, Saudi Arabia, Using Magnetic Data

Exploratory Mapping of the Geothermal Anomalies in the Neoproterozoic Arabian Shield, Saudi Arabia, Using Magnetic Data

Groundwater Exploration Within Shallow Depths Around Distinct Litho-Petrological Contact Zones

Evaluation of Geothermal Energy Potential of Parts of Upper Benue Trough Nigeria Using High Resolution Aeromagnetic Data

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