volcanic core

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• Volcanic belt — [ Trans Mexican Volcanic Belt in Mexico ] A volcanic belt is a large volcanically active region. Other terms are used for smaller areas of activity, such as volcanic fields. Volcanic belts are found above zones of unusually high temperature (700… …   Wikipedia

• Volcanic bomb — A volcanic bomb is a globe of molten rock (tephra) larger than 65 mm (2.5 inches) in diameter, formed when a volcano ejects viscous fragments of lava during an eruption. They cool into solid fragments before they reach the ground. Lava bombs can… …   Wikipedia

• Ice core — An ice core is a core sample from the accumulation of snow and ice over many years that have re crystallized and have trapped air bubbles from previous time periods. The composition of these ice cores, especially the presence of hydrogen and… …   Wikipedia

• ice core — ▪ geology Introduction       long cylinder of glacial ice recovered by drilling through glaciers in Greenland, Antarctica, and high mountains around the world. Scientists retrieve these cores to look for records of climate change over the last… …   Universalium

• Magma: Volcanic Disaster — Directed by Ian Gilmour Produced by Jeff Beach Thomas Becker Michael Braun Phillip J. Roth T.J. Sakasegawa Jörg Westerkamp Written by Rebecca Rian …   Wikipedia

• Surtsey — /serrt see/; Icel. /soorddt say/, n. an island S of and belonging to Iceland: formed by an undersea volcano 1963. ab. one mi. (1.5 km) in diameter; ab. 500 ft. (150 m) high. * * * Volcanic island off southern Iceland. It emerged from the ocean in …   Universalium

• Mount Gibraltar — Aboriginal bowrell Mount Gibraltar seen from the west Elevation …   Wikipedia

• Karisimbi, Mount — Peak, Virunga Mountains, east central Africa. The highest peak in the Virungas, at a height of 14,787 ft (4,507 m), it lies on the boundary between Rwanda and Congo (Kinshasa) in Virunga National Park. It is the habitat of gorillas and is known… …   Universalium

• Mátra Mountains — ▪ mountains, Hungary       the highest range in northern Hungary, and part of the region s central highland belt. The range s maximum elevation is reached at Mount Kékes (3,327 feet [1,014 m]). The Mátra is a sharply defined volcanic mass… …   Universalium

• Elephant Butte Dike — Infobox nrhp | name =Elephant Butte Dam nrhp type = caption = The spillway is in the lower left corner of the picture and the power plant is located at the base of the opposite side of the dam. nearest city= Elephant Butte, New Mexico area =… …   Wikipedia

• U.S. Route 491 — Devil s Highway Map of the Four Corners with US 491 highlighted in …   Wikipedia