Geological Summary

The Vernadsky Ridge on northern Paramushir island in the northern Kuriles is a large massif with over 40 volcanic centers in three volcano groups each ~7-8 km apart. The active Ebeko complex is at the N end, with the Bogdanovich group in the center and the Vernadsky group towards the S end. The latter two groups were considered to have been active in the Holocene by Gorshkov (1970). A geological map in Belovezhets et al. (2023), modified from Melekestsev et al. (1993) and State Geological Map (2001), identified Holocene lava flows from the Bogdanovich, Krasnuhk, Kozyrevsky, and Krasheninnikov cones in the central group, and from the Bilibin and Vernadsky cones in the southern group; these were also previously mapped by Gorshkov (1970). No eruption dates are known. A shear-wave seismic velocity model by Belovezhets et al. (2023) identified one "low-velocity anomaly at the depth of 4–6 km associated with magma reservoirs, which is overlaid by a prominent high-velocity anomaly representing the rigid cover" below the southern and central ridge, separate from that below Ebeko.

References

The following references have all been used during the compilation of data for this volcano, it is not a comprehensive bibliography.

Belovezhets N, Berezhnev Y, Koulakov I, Jakovlev A, Abramenkov S, Smirnov S Z, Abkadyrov I, 2023. Magma and hydrothermal sources below the northern part of Paramushir Island (Kuril Arc) inferred from ambient noise tomography. Journal of Volcanology and Geothermal Research, 443:107931. https://doi.org/10.1016/j.jvolgeores.2023.107931

Gorshkov G S, 1970. Volcanism and the Upper Mantle; Investigations in the Kurile Island Arc. New York: Plenum Publishing Corp, 385 p.