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Don Joao de Castro Bank vulkaan

Submarine volcano -13 m / - 43 ft
Azores, Portugal, 38.23°N / -26.63°W
Current status: normal or dormant (1 out of 5) | Reports
Don Joao de Castro Bank vulkaan boeken
Typical eruption style: niet gespecifieerd
Don Joao de Castro Bank vulkaanuitbarstingen: 1720 
TijdMag. / DiepteAfstandLocatie
Mon, 14 Oct 2019
Mon, 14 Oct 06:30 UTCM 2.427 kmSE Terceira (Portugal)
Sun, 13 Oct 2019
Sun, 13 Oct 17:05 UTCM 2.713 kmFossa Hirondelle (Portugal)
Sun, 29 Sep 2019
Sun, 29 Sep 23:55 UTCM 2.223 kmSE Terceira (Portugal)
Sun, 29 Sep 13:21 UTCM 2.318 kmSE Terceira (Portugal)
Thu, 26 Sep 2019
Thu, 26 Sep 02:24 UTCM 2.122 kmSE Terceira (Portugal)
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Don Joao de Castro Bank is a large submarine volcano that rises to within 13 m of the sea surface roughly halfway between Terceira and San Miguel Islands. Pillow lavas form the base of the volcano, which is capped by basaltic hyaloclastites. A submarine eruption during December 1720 produced an ephemeral island that attained a length of 1.5 km and an altitude of about 250 m before it was eroded beneath the sea surface two years later. The volcano (also spelled Dom Joao de Castro) was named after the Portuguese hydrographic survey vessel that surveyed the bank in 1941. Two youthful parasitic craters, one tephra covered and the other sediment free, are located on the NW flank. The submarine volcano has an impressive shallow fumarole field and remains seismically active.
Smithsonian / GVP volcano information

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