Abstract
The spatial distribution of the satellite lithospheric magnetic field is analyzed as a parameter associated with plume magmatism processes that occurred on the territories of large igneous magmatic provinces (LIPs). We consider the lithospheric geomagnetic field at an altitude of ~250–300 km derived from the CHAMP satellite data for three LIPs of different ages: Central European, North Atlantic, and Siberian. The results are evidence that the parameters of the lithospheric geomagnetic field are controlled by complex magmatic processes. Ancient mantle plumes are reflected in the lithospheric magnetic field as conformal positive anomalies of large magnitudes, while the lithospheric magnetic field on the territory of the young North Atlantic province is significantly reduced. Therefore, the data from geomagnetic satellite surveys add valuable information to the available geological and geophysical data and should be used holistically for studying the crustal heterogeneity of LIPs.
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This work was supported by the State Tasks of the Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation, Russian Academy of Sciences, and the Geoelectromagnetic Research Center of the Schmidt Institute of Physics of the Earth, Russian Academy of Sciences.
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Abramova, D.Y., Filippov, S.V., Abramova, L.M. et al. Lithospheric Magnetic Anomalies over Large Igneous Province Territories. Izv. Atmos. Ocean. Phys. 58, 1208–1217 (2022). https://doi.org/10.1134/S0001433822100012
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DOI: https://doi.org/10.1134/S0001433822100012