New eruption at Barren Island volcano, Indian Ocean region
Barren Island volcano in Andaman Islands of India activated again. 20,000 ft (6km) high ash plume drifting 120 nautical miles to the south-west was reported last night by VAAC Darwin, February 17, 2013. Aviation color has been changed to Red. Previously, volcanic activity was registered in September 2010 and had continued through January 2011.
Located in Andaman sea, 354-m high Barren Island is 135 km NE of Port Blair (The Andaman Islands). The barren island volcano, a strato-volcano, rises from depth of 2250m. The small, uninhabited 3-km-wide island contains a roughly 2-km-wide caldera with walls 250-350 m high.
The caldera, which is open to the sea on the west, was created during a major explosive eruption in the late Pleistocene that produced pyroclastic-flow and -surge deposits. The morphology of a fresh pyroclastic cone that was constructed in the center of the caldera has varied during the course of historical eruptions. Lava flows fill much of the caldera floor and have reached the sea along the western coast during historical eruptions.
Sources: GVP, Volcano Discovery
Featured image: Geological Survey of India via Volcanism
New eruption at Barren Island volcano, Indian Ocean region
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2013-02-18 13:33:16
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