ISSN (Online): 3108-1584
Volume 1, Issue 4 - January 2026
The aeromagnetic study presented here covers 4° to 5° N latitude and 5.30° to 6.30° E longitude in the Niger Delta region. The Reduced to Equator (RTE) magnetic map offers a spatial visualization of magnetic field variations, with high-intensity magnetic intensities in the east-central and south-western sectors suggesting the presence of magnetite-rich mafic or ultramafic rocks, while low-intensity zones in the west-central region likely indicate non-magnetic sedimentary layers or deep basement rocks. This differentiation aids in interpreting subsurface lithology’s and geological boundaries. Depth estimation techniques, including Euler DE convolution, with depth ranging from 1000 m to 7500 m, Source Parameter Imaging (SPI), and Spectral Analysis, in the study further elucidate the structural and stratigraphic framework. SPI reveals source depths exceeding 3.0 km, suggesting significant sedimentary cover crucial for hydrocarbon generation. Spectral analysis indicates magnetic basement depths ranging from 2.9 km to over 5.3 km, particularly in central and south-eastern sectors, highlighting potential hydrocarbon-rich sedimentary basins. The First Vertical Derivative (FVD) map shows passage of the Charcot paleo-fracture zone through the area. However, there are no outstanding minor fault to indicate that the paleo fracture is still active. These datasets enhance the geological understanding of the region, identify structurally controlled basins, and delineate favourable zones for hydrocarbon exploration and development in the Niger Delta.
Aeromagnetic survey, magnetic basement, structural mapping, Spectral Analysis
OLOROGUN DOLLARIS , ADEDOKUN ISAAC OLUDAYO, LAWRENCE JANE OSITA, UDENSI EMMANUEL E, "Aeromagnetic Investigation of the Subsurface Structures in Parts of Bayelsa State Nigeria", Cosmo Research & Science International Journal, vol. Jul-25, no. 1, pp. 73-83, 2026.
OLOROGUN DOLLARIS , ADEDOKUN ISAAC OLUDAYO, LAWRENCE JANE OSITA, UDENSI EMMANUEL E (2026). Aeromagnetic Investigation of the Subsurface Structures in Parts of Bayelsa State Nigeria. Cosmo Research & Science International Journal, Jul-25(1), 73-83.
OLOROGUN DOLLARIS , ADEDOKUN ISAAC OLUDAYO, LAWRENCE JANE OSITA, UDENSI EMMANUEL E. "Aeromagnetic Investigation of the Subsurface Structures in Parts of Bayelsa State Nigeria." Cosmo Research & Science International Journal, vol. Jul-25, no. 1, 2026, pp. 73-83.
@article{CRSIJ26000061,
author = {OLOROGUN DOLLARIS , ADEDOKUN ISAAC OLUDAYO, LAWRENCE JANE OSITA, UDENSI EMMANUEL E},
title = {Aeromagnetic Investigation of the Subsurface Structures in Parts of Bayelsa State Nigeria},
journal = {Cosmo Research and Science International Journal},
year = {2025},
volume = {1},
number = {4},
pages = {73-83},
issn = {3108-1584},
url = {https://cosmorsij.com/published/CRSIJ26000061.pdf},
abstract = {The aeromagnetic study presented here covers 4° to 5° N latitude and 5.30° to 6.30° E longitude in the Niger Delta region. The Reduced to Equator (RTE) magnetic map offers a spatial visualization of magnetic field variations, with high-intensity magnetic intensities in the east-central and south-western sectors suggesting the presence of magnetite-rich mafic or ultramafic rocks, while low-intensity zones in the west-central region likely indicate non-magnetic sedimentary layers or deep basement rocks. This differentiation aids in interpreting subsurface lithology’s and geological boundaries. Depth estimation techniques, including Euler DE convolution, with depth ranging from 1000 m to 7500 m, Source Parameter Imaging (SPI), and Spectral Analysis, in the study further elucidate the structural and stratigraphic framework. SPI reveals source depths exceeding 3.0 km, suggesting significant sedimentary cover crucial for hydrocarbon generation. Spectral analysis indicates magnetic basement depths ranging from 2.9 km to over 5.3 km, particularly in central and south-eastern sectors, highlighting potential hydrocarbon-rich sedimentary basins. The First Vertical Derivative (FVD) map shows passage of the Charcot paleo-fracture zone through the area. However, there are no outstanding minor fault to indicate that the paleo fracture is still active. These datasets enhance the geological understanding of the region, identify structurally controlled basins, and delineate favourable zones for hydrocarbon exploration and development in the Niger Delta.},
keywords = {Aeromagnetic survey, magnetic basement, structural mapping, Spectral Analysis},
month = {January}
}