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A volcano is a rupture in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, ...
The volcanoes are located in New Hebrides Island Arc which includes the Vanuatu Islands, which lie on the convergent plate boundary where the Australian Plate subducts (sinks) beneath the New Hebrides Plate. The subducting crust melts under the high pressure and temperatures which causes the formation of magma underground.
The 2009 eruption of Redoubt Volcano continues. A lava dome is currently growing in the summit crater, accompanied by intermittent emissions of volcanic gases and minor amounts of ash. Additional explosive events are likely and could send ash to greater than 30,000 feet above sea level.
The world-famous geothermal spa has faced intermittent closures as volcanic activity has fluctuated over the past year. ... Watch A Volcano Erupt Outside Of Iceland’s Capital.
Prindle Volcano, the northernmost volcano of the Northern Cordilleran Volcanic Province and one of the most isolated volcanoes in Alaska, was formed on the Yukon-Tanana upland during the Pleistocene epoch. It is a small cinder cone made of basanite with a 90 m (300 ft) deep breached volcanic crater at its summit. [3]
Young volcanoes are rarely found within cratons, but are characteristic of subduction zones, rift zones, or in ocean basins. Intraplate volcanoes are clustered along hotspot traces. [2] Within regions of volcanic activity, volcanic fields are clusters of volcanoes that share a common magma source. [3]
Mount Ruang spewed lava and and ash on April 17, seen from Sitaro, North Sulawesi. It also triggered lightning in the ash cloud -- a common phenomenon in powerful volcano eruptions.
The volcano was inactive for decades before an eruption in 1994. In 2000, a major eruption prompted the evacuation of about 50,000 people in the region. Since then, mild to moderate activity has ...