Volcanoes and Earthquakes

My interest in volcanoes and earthquakes forms a subset of my general interest in catastrophism. Volcanoes can effect global climate changes through injection of large quantities of ash into the atmosphere. These dust veils can lead to lower temperatures and dimmer days, which in turn lead to crop failures, which in turn lead to starvation and migration, which in turn lead to war, the spread of disease, the fall of old civilizations, and the birth of new ones. Extensive, prolonged vulcanism may play a part in mass extinctions as well. See catastrophism and mass extinctions for more information.

Similar "nuclear winter" consequences can also arise from energetic impact events of the super-Tunguska class. See Clube and Napier's book Cosmic Winter for details.

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Last modified by pib on July 17, 2010.