Berutarubesan [Berutarube] (Japan - administered by Russia)

Status Unknown Eruption Unknown 1221m
Stratovolcano (Subduction zone / Intermediate crust (15-25 km))

The gently sloping, 1220-m-high Berutarubesan stratovolcano forms the SW tip of Iturup Island. The flanks of the andesitic-to-dacitic volcano are deeply dissected by wide glacial valleys; a low saddle on the NE side separates it from the slopes of the Lvinaya Past caldera. The only known Holocene activity produced a small pyroclastic cone that was superposed on the intersecting headwalls of U-shaped valleys and cirques on the volcano's broad eroded summit. The hydrothermally altered summit cone was the source of two small lava flows. Berutarubesan was estimated to have ceased erupting only a few hundred to at most 1000 years ago (Gorshkov, 1970). No confirmed historical eruptions are known, although fumarolic areas on the walls of the summit crater are currently depositing sulfur.

The gently sloping, 1220-m-high Berutarube stratovolcano, seen here from the SE, forms the SW tip of Iturup Island. Wide, deeply dissected glacial valleys cut the flanks of the volcano, and a low saddle on the NE side (far right) separates Berutarube from the slopes of Lvinaya Past caldera. Berutarube was estimated to have ceased erupting within the past few hundred to a thousand years ago, but no confirmed historical eruptions are known. Light-colored fumarolic areas can be seen in the summit crater on the center horizon.

Photo by Alexander Rybin, 2001 (Institute of Marine Geology and Geophysics, Yuzhno-Sakhalin).

Last updated 2019-08-04 00:28:03