Том: Part F1503 , Уear of publication: 2026

We report results of a paleomagnetic study and systematization of measured paleomagnetic directions in magmatic formations of basic composition from the Minusa Basin, South Siberia. This study confirms the idea of an unusual state of the geomagnetic field at the beginning of the Devonian. Using statistical methods, up to eight distinct clusters of paleomagnetic directions were identified, which, according to the proposed model, represent the record of an equatorial dipole and anomalous component of the geomagnetic field on top of a decreasing magnitude (by about an order of magnitude) of the main dual-polarity field corresponding to the axial dipole. The sudden decrease in the intensity of the Virtual Dipole Moment of the Earth during the EarlyMiddle Devonian time is supported by available paleointensity estimates. The plotted reconstructions emphasize the possible spatial relationship of the observed components with the current location of the largest magnetic and gravitational anomalies whose sources are located near the coremantle boundary. This may be evidence of the stationary spatial position of the world's magnetic anomalies over a long period of time. Provided this proves true, paleotectonic reconstructions may become possible not only in latitude but also in longitude. According to our model, the Minusa region of the Siberian paleocontinent at approximately 410 Ma was located near the present-day Canary Islands, off the west coast of Africa.