composite volcano in Guatemala.
Volcanic island (South sandwich)
composite volcano
“collapse caldera”
(Poas Volcan, Costa Rica)
Montserrate with a pyroclastic
cloud
Montserrat volcano, Caribbean and
pyroclastic clouds
Crater Lake (caldera)
Wizard Island (cinder cone)
Merapi volcano May 14, 2006
Indonesia
Pyroclastic cloud on Mt. Merapi
May 14,2006
A pyroclastic flow of Mt. Pinatubo
chasing a truck.
Lava dome (Mt. Merapi) and lava flow
5-14-2006
Irazu (composite volcano) Costa Rica
Irazu volcano, (composite volcano)
alternating lava layers and acidic
water in the crater
Cinder cone volcano
700 foot Cinder cone volcano
(northern California)
Students climbing a cinder cone volcano
Mount St.Helens before 1980
North side (Mt. St. Helens) Dec.2005
Students climbing Mt. St. Helens
summit of Mt. St. Helens
(composite volcano)
Volcanic ash on the summit of Mt. St Helens
Mt. St. Helens building dome
Lava dome inside the caldera of
Mount St. Helen (2004)
Shield volcano in Iceland (1974)
Mt. St. Helens (2006)
alternating layers of pasty and fluid lava
(Mt. St. Helens)
Rising rock mass in the crater of
Mt.St. Helens (April 2006)
Crater and active vent of Ertaale
volcano (Ethiopia)
“lava coil” in pahoehoe lava
pasty ‘aa’ lava flow
Lava blister caused by escaping gases
Yellow sulfur and white acids
Mount Pinatubo
(Philippines)
ejects
5,000 tons of
sulfur dioxide
each day
Lava fountains in the rift of Kilauea
(white lava 1150 degrees C. and the
yellow lava 1090 degrees C.)
volcanic lightning
Son of Krakatoa (cinder cone)
east side of the Indian Ocean
Tsunami similar to the waves
produced by Krakatoa
Mount Etna a composite volcano
(Sicily)
Views of Mount Etna’s eruption
Aniakchak explosion caldera
(Alaska)
Pahoehoe lava covering a national
park road in Hawaii.
“aa” lava
pahoehoe lava (Hawaii)
pillow lava (Hawaii)
Mount Mageik (Alaska) composite
volcano
Lahar produced by the Santiaquito
volcano (Guatemala)
shield volcano
Pyroclastic debris
Pahoehoe lava (Hawaii)
Volcanic ash
Volcanic vent
fumarole covered with sulfur
House consumed by lava
(Hawaii).
Portable house for volcanic regions
Pyroclastic cloud of ash, cinder and
burning gases moving at 50 mph
blocks of pumice of a
pyroclastic flow
Lava surrounds a house (Hawaii)
Augustine (composite volcano) Alaska
lava fountain and pyroclastic debris
from Kilauea volcano
Intermediate color of andesite lava