AUTHOR=Eldosouky Ahmed M. , Ekwok Stephen E. , Ben Ubong C. , Ulem Christian A. , Abdelrahman Kamal , Gomez-Ortiz David , Akpan Anthony E. , George Anthony Michael , Pham Luan Thanh 

TITLE=Appraisal of geothermal potentials of some parts of the Abakaliki Anticlinorium and adjoining areas (Southeast Nigeria) using magnetic data

JOURNAL=Frontiers in Earth Science

VOLUME=Volume 11 - 2023

YEAR=2023

URL=https://www.frontiersin.org/journals/earth-science/articles/10.3389/feart.2023.1216198

DOI=10.3389/feart.2023.1216198

ISSN=2296-6463

ABSTRACT=The Abakaliki Anticlinorium and adjoining areas were appraised with the object of delineating high geothermal potential zones. Spectral depth analysis involving an improved centroid technique was used to analyze high-quality magnetic data. The obtained geothermal parameters were gridded to map the various geothermal features within the investigated area. The obtained results varied from 4. 99-9.35 km,   2.31-6.15 km, 6.11-16.28 km, 35.63-94.93  °C/km, and 89.07-237.32 mW/m 2 for centroid depth, top depth, Curie point depth, geothermal gradient, and heat flow values varied, respectively. The delineated semi-oval structure in the central zone of the investigated region characterized by shallow Curie point depth (CPD) (<8.5 km) correlates with the location of high heat flow (HF) (>191.0 mW/m 2 ) and geothermal gradient (GG) (>74.0 °C/km) region. The high geothermal potential of the region is triggered by the massive post-rift tectonic event of the Santonian period related to the Abakaliki Anticlinorium. Further geophysical exploration programs should be carried out before exploitation activities at anomalous geothermal regions.