ABSTRACT
The Nsukka area is a sedimentary basin within the Anambra basin which is part of the lower
Benue trough. The Nsukka sheet (covering the aeromagnetic data of Nsukka) lies between
latitudes 6030΄ and 7000ʹNorth and longitudes 7000ʹ and 7030ʹEast. The IGRF corrected
aeromagnetic data ofNsukka sheet, southeastern Nigeria has been interpreted using the
standard Euler deconvolution, source parameter imaging,forward and inverse modelling
methods with the objectives of determining the depth/thickness of the sedimentary basin,
magnetic susceptibilities and type ofmineral present. Oasis montaj software and potent
software were used in the data analysis.The forward and inverse modelling depths ofthe
sedimentary basinare 1200m, 1644m, 1972m, 2193m and 2285m for the five profiles used.
We also obtained that the susceptibility values of the magnetic materials causing the
anomalies are 0.0031, 0.0073, 1.4493, 0.0069 and 0.0016 which are typically sandstones and
ironstones or oxides of iron which are magnetic in nature. Source parameter imaging depth
rangedfrom 151.6m minimum (shallow magnetic source bodies) to 3082.7 m maximum (deep
lying magnetic source bodies). Euler depth result for SI=0.5 shows the depth of contact body
ranging from 9.47m to 124.02m; for SI=1, depth of dyke, sill and thin sheet body ranged from
22.51m to 125.29m, for SI=2, depth of line source ranges from 39.05m to 120.30m. For SI=3
depth of spherical and compact body ranged from 7.99m to 128.93m. Euler depths for the
four different structural index ranged from 7.99m to 128.93m are depths of shallow magnetic
sources resulting from lateritic bodies in the outcrops within the study area.The depth for
shallow magnetic material is ranged from 42.10 m to 79.10 m with an average depth value of
60.6 m, for deep lying magnetic material depth ranged from 233.95 m to 3082.73 with an
average depth value of 1658.34 m. Depths of 1600m to 3082.7m show thick sediments for
possible hydrocarbon accumulation.
MIRIANRITA, O (2021). Interpretation Of Aeromagnetic Data Around Nsukka Area, Southeastern Nigeria.. Afribary. Retrieved from https://track.afribary.com/works/interpretation-of-aeromagnetic-data-around-nsukka-area-southeastern-nigeria
MIRIANRITA, OSSAI "Interpretation Of Aeromagnetic Data Around Nsukka Area, Southeastern Nigeria." Afribary. Afribary, 15 May. 2021, https://track.afribary.com/works/interpretation-of-aeromagnetic-data-around-nsukka-area-southeastern-nigeria. Accessed 25 Dec. 2024.
MIRIANRITA, OSSAI . "Interpretation Of Aeromagnetic Data Around Nsukka Area, Southeastern Nigeria.". Afribary, Afribary, 15 May. 2021. Web. 25 Dec. 2024. < https://track.afribary.com/works/interpretation-of-aeromagnetic-data-around-nsukka-area-southeastern-nigeria >.
MIRIANRITA, OSSAI . "Interpretation Of Aeromagnetic Data Around Nsukka Area, Southeastern Nigeria." Afribary (2021). Accessed December 25, 2024. https://track.afribary.com/works/interpretation-of-aeromagnetic-data-around-nsukka-area-southeastern-nigeria