The influence of the African superplume on the conditions of hydrocarbon generation in rift basins of the late phanerozoic
https://doi.org/10.32454/0016-7762-2025-67-2-111-117
EDN: UVKTGV
Abstract
Background. African rift basins area characterized by changes from exclusively or predominantly gas to oil specialization, depending on the age of the deposits and moving away from the Southern and Western centers of the African superplume. A model accounting for changes in the conditions of hydrocarbon generation in peri- and intracontinental rift basins due to the cooling of asthenospheric rift-forming flows, upon their moving away from the hot plume centers, is proposed.
Aim. To determine regional geological patterns of the oil and gas specialization of rift basins and their probable nature.
Materials and methods. The study involved a comparative analysis of published data on the geology and oil and gas potential of rift basins (intra- and pericontinental) using seismic tomography data on the temperature state of the deep subsoil of Africa and the adjacent ocean areas.
Results. The oil and gas specialization of rift basins was shown to correlate with their age, tectonic development, and position in the modern structure of Africa, as well as with the distance from the Southern and Western centers of the African superplume.
Conclusion. The significant importance of the superplume in determining the oil and gas specialization of basins is substantiated.
About the Author
V. M. UsovaRussian Federation
Valentina M. Usova — senior lecturer, Department of Geology, Mineral Development and Oil & Gas Engineering, Academy of Engineering, Peoples’ Friendship University of Russia (RUDN University).
6, Miklukho-Maklaya str., Moscow 117198
Scopus ID 57205576129
Competing Interests:
None
References
1. Modelevsky M.S., Modelevsky M.M. General assessment of the oil and gas potential of the African continent. Geology and Geophysics. 2016. Vol. 57, no. 9. P. 1707—1714 (In Russ.).
2. Sokolov S.Yu., Dobrolyubova K.O., Turko N.N. Relationship of surface geological and geophysical characteristics with the deep structure of the Mid-Atlantic Ridge according to seismic tomography data. Geotectonics. 2022. Vol. 56. P. 107—122 (In Russ.).
3. Khutorskoy M.D. Depth of sources and thermal regime of mantle plumes // Monitoring. Science and Technology. 2021. No. 3(49). P. 20—31 (In Russ.). https://doi.org/10.25714/MNT.2021.49.003
4. Brownfield M.E., Charpentier R.R. Geology and total petroleum systems of the Gulf of Guinea province of West Africa. U.S. Geological Survey Bulletin. 2006; 2207(C). https://doi.org/10.3133/b2207C
5. Kendall J-M., Pilidou S., Keir D., Bastow I.D. Mantle upwellings, melt migration and the rifting of Africa: Insights from seismic anisotropy. In: The Afar Volcanic Province Within the East African Rift System. Ed. by G. Yirgu, C.J. Ebinger, P.K.H. Maguire, Geol. Soc. London. UK. 2006. Vol. 259. P. 55—72.
6. Priestley K., McKenzie D., Debayle É., Pilidou S. The African upper mantle and its relationship to tectonics and surface geology. Geophysical Journal International. 2008;175:1108—1126. https://doi.org/10.1111/J.1365-246X.2008.03951.X
7. Wilson M., Guiraud R., Morean C., Bellon Y.Y-C. Late Permian to Recent magmatic activity on the African-Arabian margin of Thethys. In: Petroleum Geology of North Africa. Geol. Soc. London. Spec. Publ. 1998. Is. 132. P. 231—263.
Review
For citations:
Usova V.M. The influence of the African superplume on the conditions of hydrocarbon generation in rift basins of the late phanerozoic. Proceedings of higher educational establishments. Geology and Exploration. 2025;67(2):111-117. (In Russ.) https://doi.org/10.32454/0016-7762-2025-67-2-111-117. EDN: UVKTGV