Pyroclastic flow

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Pyroclastic flows sweep doun the flanks o Mayon Volcano, Philippines, in 1984

A pyroclastic flow (an aa kent scienteefically as a pyroclastic density current[1]) is a fast-movin current o het gas an rock (collectively kent as tephra), which reaches speeds movin away frae a volcano o up tae 700 km/h (450 mph).[2]

References[eedit | eedit soorce]

  1. Branney M.J. & Kokelaar, B.P. 2002, Pyroclastic Density Currents and the Sedimentation of Ignimbrites. Geological Society London Memoir 27, 143pp.
  2. Pyroclastic flows USGS