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Global Volcanism Program | Image GVP-05331

An ash plume rises above the eastern crater of the newly formed Ukinrek Maars on 6 April 1977. West Maar was formed during the initial days of the eruption that began on March 30. Three days later explosions began at East Maar, 600 m away. At the peak of the eruption ash plumes reached up to 6 km above the vent. On the 4th day of the eruption a lava dome appeared within East Maar. Photo by R. Russell, 1977 (Alaska Department of Fish and Game).

An ash plume rises above the eastern crater of the newly formed Ukinrek Maars on 6 April 1977. West Maar was formed during the initial days of the eruption that began on March 30. Three days later explosions began at East Maar, 600 m away. At the peak of the eruption ash plumes reached up to 6 km above the vent. On the 4th day of the eruption a lava dome appeared within East Maar.

Photo by R. Russell, 1977 (Alaska Department of Fish and Game).

Keywords: maar | crater | magma water interaction | eruption | ash | ash plume | explosive eruption | ashfall | deposit | phreatomagmatic


Ukinrek Maars