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Data from the Global Volcanism Program of the Smithsonian Institution
Details for: Montagu Island
This 13 January 2006 view of the north side of Montagu Island shows the lava field formed by a recent eruption. A plume rising above Mount Belinda appears to be dominantly composed of steam. The snaking plume of steam in front of the cone likely indicates the location of hot lava flow. There was no record of Holocene activity at Montagu until satellite data, beginning in late 2001, revealed thermal anomalies consistent with lava lake activity. Photo courtesy of Dave Hall, Frikkie Viljoen and Ian Hunter, 2006 (SA Argulhas and South African Weather Service).
Volcano Number:
390081
Volcano Name:
Montagu Island
Country:
United Kingdom
Volcano Type:
Shield
Last Eruption:
2007 CE
Elevation:
1370m
Tectonic Setting:
Subduction zone / Oceanic crust (< 15 km)
Latitude:
-58.445
Longitude:
-26.374
Details
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The largest of the South Sandwich Islands, Montagu consists of a massive shield volcano cut by a 6-km-wide ice-filled summit caldera. The summit of the 11 x 15 km island rises about 3,000 m from the sea floor between Bristol and Saunders Islands. Around 90% of the island is ice-covered; glaciers extending to the sea typically form vertical ice cliffs. The name Mount Belinda has been applied both to the high point at the southern end of the summit caldera and to the young central cone. Mount Oceanite, an isolated peak at the SE tip of the island, was the source of lava flows exposed at Mathias Point and Allen Point. There was no record of Holocene activity until MODIS satellite data, beginning in late 2001, revealed thermal anomalies consistent with lava lake activity. Apparent plumes and single anomalous pixels were observed intermittently on AVHRR images from March 1995 to February 1998, possibly indicating earlier volcanic activity.
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Eruption Data from the Global Volcanism Program of the Smithsonian Institution
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Emissions Data from the Global Volcanism Program of the Smithsonian Institution
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Data from the Earthchem Library
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Data from the Earthchem Portal
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Data from the SESAR Database
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Data from the MaGa Database
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Data from UNAVCO
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Data from USIEI
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Data from IRIS FDSNWS
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