Today – 4/20Today – 4/20 Volcano Volcano

summarysummary Mt PinatuboMt Pinatubo EvaluationsEvaluations

Fissure Eruption Kilauea January Fissure Eruption Kilauea January 19831983

Royal Gardens Subdivision June Royal Gardens Subdivision June 19831983

September 1983September 1983

August 1983August 1983

Puu O’o and Sunset CraterPuu O’o and Sunset Crater

Mt St Helens v. San Francisco Mt St Helens v. San Francisco PeaksPeaks

XC Today

Noon, Gallagher theater

Last Time

Yellowstone – hotspot caldera explosions

Long Valley caldera – signs of unrest: ground swell, eqs, dying trees and animals

Movement of energy drives physical (and biological) processes

In the interiors of moons of large planets, heat is generated by “tidal friction”, i.e. gravitational energy is transformed into thermal energy, driving volcanism