VOLCANOES

Volcanoes often have powerful and destructive eruptions, but they're also quite fascinating.  They vary considerably in terms of size, shape, petrologic composition, tectonic setting, and eruptive violence.  Most volcanism on Earth (above sea level) is along subduction zones (e.g., Cascades of western North America, Aleutian Islands of Alaska, Central America, Andes Mountains of South America, Japan, the Philippines, Indonesia, parts of southern Europe).  Other volcanoes are at hotspots (Hawaii, Yellowstone, Iceland, Afar, etc.) or along rift valleys (formed by tectonic divergence).  See the “Eruptions” web log for daily updates on volcanism anywhere in the world.

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KILAUEA  VOLCANO (Hawaii)

MT.  VESUVIUS (Italy)

MT.  PINATUBO (Philippines)

KRAKATOA (Indonesia)

SOUFRIÈRE  HILLS  VOLCANO (Montserrat)

MT.  MERAPI (Indonesia)

HOME  REEF  VOLCANO (Tonga)

JABAL  AL-TAIR  VOLCANO (Red Sea)

OL  DOINYO  LENGAI (Tanzania)

PACAYA  VOLCANO (Guatemala)

    (Short video clip of Pacaya, provided by Fred Sandoval)

MT.  ETNA (Sicily)

MT.  FUJI (Japan)

MAUNA  LOA  VOLCANO (Hawaii)

MT.  SPURR (Alaska)

KERITH  CRATER (Iceland)

PERIDOT  MESA (Arizona, USA)

KILBOURNE  HOLE  CRATER (New Mexico, USA)

FILLMORE  CRATERS  VOLCANISM (Utah, USA)

PUU MAHANA  VOLCANIC  CONE (Hawaii)

MEDICINE  LAKE  VOLCANO (California, USA)

OL  DOINYO NYUKIE (Kenya)

MT.  KENYA  VOLCANO (Kenya)

MAGADI  TRACHYTE  FLOOD  LAVA (Kenya)

ELLENDALE  LAMPROITE  LAVA (Western Australia)

MT.  EREBUS  VOLCANO (Antarctica)

SIERRA  GRANDE  SHIELD  VOLCANO (New Mexico, USA)

VALLES  CALDERA (New Mexico, USA)

CHAITÉN  VOLCANO (Chile)

MT.  ST.  HELENS (Washington, USA)

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