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LITHOSPHERIC MAGNETIC ANOMALIES OVER THE LARGE IGNEOUS PROVINCE TERRITORIES
1 Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation, Russian Academy of Sciences
2 Geoelectromagnetic Research Centre of Schmidt Institute of Physics of the Earth, Russian Academy of Sciences
Journal: Geophysical processes and biosphere
Tome: 21
Number: 1
Year: 2022
Pages: 33-42
UDK: 550. 38
DOI: 10.21455/GPB2022.1-2
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Abramova
S.V D.Yu. LITHOSPHERIC MAGNETIC ANOMALIES OVER THE LARGE IGNEOUS PROVINCE TERRITORIES // . 2022. Т. 21. № 1. С. 33-42. DOI: 10.21455/GPB2022.1-2
@article{Abramova
S.VLITHOSPHERIC2022,
author = "Abramova
S.V, D. Yu.",
title = "LITHOSPHERIC MAGNETIC ANOMALIES OVER THE LARGE IGNEOUS PROVINCE TERRITORIES ",
journal = "Geophysical processes and biosphere",
year = 2022,
volume = "21",
number = "1",
pages = "33-42",
doi = "10.21455/GPB2022.1-2",
language = "English"
}
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Keywords: lithospheric magnetic anomalies, satellite observations, igneous magmatic provinces, mantle plumes.
Аnnotation: Spatial distribution of the satellite lithospheric magnetic field is analyzed as a parameter associat-ed with plume magmatism processes which occurred at the territory of large igneous magmatic provinces (LIP). We consider the lithospheric geomagnetic field at ~250–300 km altitude derived from the CHAMP satellite data for three LIPs of different ages: Central-European, North-Atlantic, and Siberian. The obtained results evidence that the parameters of the lithospheric geomagnetic field are controlled by the 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 at the territory of the young North-Atlantic province is significantly reduced. Therefore, the data of geomagnetic satellite survey add valuable information to the available geological and geophysical data and should be used in complex for studying the crustal heterogeneity of LIPs.
