Report on Zhupanovsky (Russia) — March 1990
Bulletin of the Global Volcanism Network, vol. 15, no. 3 (March 1990)
Managing Editor: Lindsay McClelland.
Zhupanovsky (Russia) Four vigorous fumaroles
Please cite this report as:
Global Volcanism Program, 1990. Report on Zhupanovsky (Russia) (McClelland, L., ed.). Bulletin of the Global Volcanism Network, 15:3. Smithsonian Institution. https://doi.org/10.5479/si.GVP.BGVN199003-300120.
53.589°N, 159.15°E; summit elev. 2899 m
All times are local (unless otherwise noted)
On 2 February, fumarolic activity was noted in two vents inside the active crater and two vents to the W (figure 1).
|Figure 1. Active fumarolic vents at Zhupanovsky, looking roughly E on 2 February 1990. Courtesy of B. Ivanov.|
Geologic Background. The Zhupanovsky volcanic massif consists of four overlapping stratovolcanoes along a WNW-trending ridge. The elongated volcanic complex was constructed within a Pliocene-early Pleistocene caldera whose rim is exposed only on the eastern side. Three of the stratovolcanoes were built during the Pleistocene, the fourth is Holocene in age and was the source of all of Zhupanovsky's historical eruptions. An early Holocene stage of frequent moderate and weak eruptions from 7000 to 5000 years before present (BP) was succeeded by a period of infrequent larger eruptions that produced pyroclastic flows. The last major eruption took place about 800-900 years BP. Historical eruptions have consisted of relatively minor explosions from the third cone.
Information Contacts: B. Ivanov, IV.