Spirit Lake (Washington)
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Spirit Lake is a lake in Skamania County, Washington, United States, located north of Mount St. Helens. It was a popular tourist destination for many years until Mount St. Helens erupted in 1980. Prev
Aerial view of the lake in 2005
Spirit Lake outlet tunnel
Spirit Lake prior to 1980
Spirit Lake filled with debris from the eruption. October 4, 1980
Pyrolysis
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Pyrolysis is a process involving the separation of covalent bonds in organic matter by thermal decomposition within an inert environment without oxygen.
Spirit Lake (Washington)
…level on the mountain slopes along the north shoreline of the lake. The debris avalanche deposited about 430,000,000 cubic metres (350,000 acre⋅ft) of pyrolized trees, other plant material, volcanic ash, and volcanic debris of various origins into Spirit Lake. The deposition of this volcanic material decreased…
Burning pieces of wood, showing various stages of pyrolysis, followed by oxidative combustion
Oak charcoal
Caramelized onions are slightly pyrolyzed.
This pizza is pyrolyzed, almost completely carbonized.