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Ilyinsky Volcano, Russia
The conical Ilyinsky volcano, seen here from the NW, was constructed beginning about 8000 years ago within a 4-km-wide caldera of about the same age as the adjacent Kurile Lake caldera.
A period of strong silicic explosive volcanism during the mid-Holocene lasted 1000-1500 years.
Growth of the modern cone was completed during the late Holocene.
A series of youthful lava flows cover much of the northern flanks.
The only recorded historical eruption, in 1901, produced a 1-km-wide crater on the NE flank.
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. PHOTO SOURCE: Oleg Dirksen, 1996 (courtesy of Vera Ponomareva, Institute of Volcanic Geology and Geochemistry, Petropavlovsk), courtesy of the Global Volcanism Program, Smithsonian National Museum of Natural History, used with permission.
NOTE: The information regarding Volcano on this page is re-published from other sources. No claims are made regarding the accuracy of Volcano information contained here. All suggestions for corrections of any errors about Volcano photos should be addressed to the copyright owner noted below the photo.
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This page was last modified 23-FEB-10
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