No latest activity reported for Ilyinsky.

Below is a summary of eruption dates and Volcanic Explosivity Indices (VEI).

The following references are the sources used for data regarding this volcano. References are linked directly to our volcano data file. Discussion of another volcano or eruption (sometimes far from the one that is the subject of the manuscript) may produce a citation that is not at all apparent from the title. Additional discussion of data sources can be found under Volcano Data Criteria.

Braitseva O A, Melekestsev I V, Ponomareva V V, Sulerzhitsky L D, 1995. Ages of calderas, large explosive craters and active volcanoes in the Kuril-Kamchatka region, Russia. {Bull Volc}, 57: 383-402

Erlich E N, 1986. Geology of the calderas of Kamchatka and Kurile Islands with comparison to calderas of Japan and the Aleutians, Alaska. {U S Geol Surv Open-File Rpt}, 86-291: 1-300

Fedotov S A, Masurenkov Y P (eds), 1991. {Active Volcanoes of Kamchatka}. Moscow: Nauka Pub, 2 volumes

IAVCEI, 1973-80. Post-Miocene Volcanoes of the World. {IAVCEI Data Sheets, Rome: Internatl Assoc Volc Chemistry Earth's Interior}.

Kozhemyaka N N, 1995. Active volcanoes of Kamchatka: types and growth time of cones, total volumes of erupted material, productivity, and composition of rocks. {Volc Seism}, 16: 581-594 (English translation)

Masurenkov Y P (ed), 1980. {Volcanic Center: Structure, Dynamics and Products}. Moscow: Nauka Pub, 299 p (in Russian)

Ponomareva V V, 1992. . (pers. comm.)

Ponomareva V V, Kyle P R, Melekestsev I V, Rinkleff P G, Dirksen O V, Sulerzhitsky L D, Zaretskaia N E, Rourke R, 2004. The 7600 (14C) year BP Kurile Lake caldera-forming eruption, Kamchatka, Russia: stratigraphy and field relationships. {J Volc Geotherm Res}, 136: 199-222

Ponomareva V V, Melekestsev I V, Dirksen O V, 2006. Sector collapses and large landslides on late Pleistocene-Holocene volcanoes in Kamchatka, Russia. {J Volc Geotherm Res}, 158: 117-138

Vlodavetz V I, Piip B I, 1959. Kamchatka and Continental Areas of Asia. {Catalog of Active Volcanoes of the World and Solfatara Fields}, Rome: IAVCEI, 8: 1-110

The conical Ilyinsky volcano, rising dramatically to 1578 m above the NE shore of Kurile Lake, was constructed beginning about 7600 radiocarbon years ago at the NE margin of Kurile Lake caldera. The modern edifice grew within a 4-km-wide caldera produced by collapse of an earlier volcano creating large debris avalanches at about the time of formation of the adjacent Kurile Lake caldera. A period of strong silicic explosive volcanism during the mid-Holocene lasted about 800 years. A series of youthful lava flows cover much of the northern flanks of Ilyinsky. Growth of the modern cone was completed about 1900 years ago, after which a long quiescent period began. The only recorded historical eruption, in 1901, produced a large 1-km-wide crater on the NE flank.