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Saturday, Feb 06, 2016
Alguna actividad podría estar ocurriendo en el remoto volcán: ... [Leer más]
 

MacDonald volcano

Submarine volcano -39 m / - 128 ft
Austral Islands,  , -28.98°S / -140.25°W
Current status: normal or dormant (1 out of 5) | Reports
MacDonald volcano books
Last update: 19 Aug 2018 (steaming observed)
Typical eruption style: sin especificar
Erupciones del volcán MacDonald: 2016(?), 1989No hay terremotos recientes
Fecha / HoraRevista / ProfundidadDistanciaUbicación

Background:

Discovered by the detection of teleseismic waves in 1967, Macdonald seamount (also known as Tamarii seamount) rises from a depth of about 1800 m to within 27 m of the sea surface at the eastern end of the Austral Islands. The alkali-basaltic submarine volcano marks the site of a hotspot that was the source of the Austral-Cook island chain. The summit of the seamount, named after volcanologist Gordon Macdonald, consists of a flat plateau about 100 x 150 m wide with an average depth of about 40 m. The summit plateau is capped with spatter cones that form steep-sided pinnacles. Most eruptions of Macdonald have been seismically detected, but in 1987 and 1989 pumice emission was observed from research vessels. Pumice rafts observed in the South Pacific in 1928 and 1936 may also have originated from Macdonald seamount.
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Smithsonian / GVP volcano information


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