Geophysical Center of the Russian Academy of Sciences
Moscow, Moscow, Russian Federation
Russian Federation
Schmidt Institute of Physics of the Earth of RAS
Russian Federation
Russian Federation
CSCSTI 37.00
CSCSTI 38.00
Russian Classification of Professions by Education 05.00.00
Russian Library and Bibliographic Classification 26
Russian Trade and Bibliographic Classification 63
BISAC SCI SCIENCE
The Valimyaki intrusive complex is an early-orogenic gabbroid body of the Northern Ladoga region, composed predominantly of pyroxenites, gabbros, and diorites and historically known for titanium-magnetite mineralization concentrated in its near-surface marginal zones. At present, no reliable three-dimensional model of the Valimyaki massif exists, and its investigation is significantly constrained by difficult terrain accessibility. Multi-altitude UAV-based aeromagnetic surveying provides new opportunities for obtaining information on the deep structure of the intrusive complex. In 2023–2025, a series of surveys was carried out over the Valimyaki massif and Mäkisalo Island, the two main known surface expressions of the Valimyaki complex. As a result, maps of the anomalous magnetic field were obtained at several flight altitudes, enabling direct calculation of the vertical magnetic field gradient. The multi-level dataset considerably expanded the interpretational potential and the application of various field transformation and inversion techniques, including the equivalent-source method. Integrated analysis of the aeromagnetic data using spectral and mounting inversion methods yielded a consistent model of both deep-seated and near-surface magnetic sources, refining the internal structure and spatial extent of the Valimyaki massif.
Valimyaki, Mäkisalo Island, Raakhe-Ladoga zone, UAV aeromagnetic surveying, multialtitude aeromagnetic surveying
1. Cheremisina E. N., Finkel’shtein M. Ya., Deev K. V., et al. GIS INTEGRO. Status and prospects for development in the context of import substitution // Geologiya nefti i gaza. — 2021. — No. 3. — P. 31–40. — https://doi.org/10.31087/0016-7894-2021-3-31-40. — (In Russian).
2. Dolgal A. S., Balk P. I., Demenev A. G., et al. The finite-element method application for interpretation of gravity and magnetic data // Bulletin of Kamchatka Regional Association "Educational-Scientific Center". Earth sciences. — 2012. — 19(1). — P. 108–127. — (In Russian).
3. Gordin V. M., Tikhotskii S. A. and Shur D. Yu. Reconstruction of the harmonic component of the magnetic field modulus anomalies // Izvestiya, Physics of the Solid Earth. — 2006. — Vol. 42, no. 4. — P. 334–343. — https://doi.org/10.1134/s1069351306040082.
4. Jackisch R., Heincke B. H., Zimmermann R., et al. Drone-based magnetic and multispectral surveys to develop a 3D model for mineral exploration at Qullissat, Disko Island, Greenland // Solid Earth. — 2022. — Vol. 13, no. 4. — P. 793–825. — https://doi.org/10.5194/se-13-793-2022.
5. Kobrunov A. I. and Varfolomeev V. A. One approach of density equivalent representation and using it for gravity field interpretation // Izvestiya AN SSSR. Fizika Zemli. — 1981. — No. 10. — P. 25–44. — (In Russian).
6. Kulyandina A. S., Filippova A. I. and Sokolova E. Yu. Geophysical Imaging of the Crust for the Source Area of the Khastakh Earthquake (NE Margin of the Siberian Platform, Yakutia) // Russian Journal of Earth Sciences. — 2025. — Vol. 25. — ES4008. — https://doi.org/10.2205/2025es001004.
7. Mitsyn S. V. On numeric implementation of spectral method of gravimetry inverse problem // Geoinformatika. — 2018. — No. 3. — P. 89–97. — (In Russian).
8. Mitsyn S. V. and Bolshakov E. M. Assembly method in GIS INTEGRO and its usage for solving of gravitational inverse problem // Geoinformatika. — 2021. — No. 3. — P. 36–47. — https://doi.org/10.47148/1609-364x-2021-3-36-47. — (In Russian).
9. Priezzhev I. I. Spectral and statistical analysis of airborne geophysical data in the ASOM-AGS/EC system. Dissertation of a candidate of technical sciences. — MGRI, 1989. — (In Russian).
10. Proterozoic Ladoga structure (Geology, deep structure and mineral genesis) / ed. by N. V. Sharov. — Petrozavodsk (Russia) : KarSC RAS, 2020. — 434 p. — (In Russian).
11. Stepanov K. I., Sanin D. M. and Sanina G. N. State geological map of the Russian Federation scale 1:200,000, second edition, Karelian series, sheets P-35-XXIV, P-36-XIX. Explanatory note. — Moscow (Russia) : VSEGEI, 2013. — 230 p. — (In Russian).
12. Strakhov V. N. and Lapina M. I. Mounting method for solving the inverse problem of gravimetry // Doklady AN SSSR. — 1976. — Vol. 227, no. 2. — P. 344–347. — (In Russian).
13. Taran Y. V., Aleshin I. M., Matveev M. A., et al. Preliminary Results of Field Geological and Geophysical Studies of the Vyalimyaki Massif (Northern Ladoga Region) // Izvestiya, Atmospheric and Oceanic Physics. — 2025. — Vol. 61, no. 7. — P. 824–833. — https://doi.org/10.1134/S0001433825701117.
