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ID. Mount St. Helens - 53

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Mount St. Helens showing the lava dome and deposits that resulted from the eruptive activity of March-April 1982. This activity was the 12th eruption since May 18, 1980. It produced an avalanche of pumice, ice, and rock debris, followed by a mudflow, which flowed north from the crater to Spirit Lake and the North Fork of the Toutle River. Two lobes were added to the composite dome in the crater. Photograph by Richard B. Waitt. Skamania County, Washington. 1982. Published on p. 184 in U.S. Geological Survey. Earthquake information bulletin, v. 14, 5. September-October 1982.

Mount St. Helens showing the lava dome and deposits that resulted from the eruptive activity of March-April 1982. This activity was the 12th eruption since May 18, 1980. It produced an avalanche of pumice, ice, and rock debris, followed by a mudflow, which flowed north from the crater to Spirit Lake and the North Fork of the Toutle River. Two lobes were added to the composite dome in the crater. Photograph by Richard B. Waitt. Skamania County, Washington. 1982. Published on p. 184 in U.S. Geological Survey. Earthquake information bulletin, v. 14, 5. September-October 1982.

Image file: /htmllib/btch140/btch140j/btch140z/msh00053.jpg
   

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