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Galápagos Rift volcano

Submarine volcano -2430 m / - 7,972 ft
Eastern Pacific Ocean, 0.79°N / -86.15°W
Current status: dormant (1 out of 5)
Galápagos Rift volcano books
Typical eruption style: unspecified
Galápagos Rift volcano eruptions: 1996 ± 6 years No recent earthquakes
TimeMag. / DepthDistanceLocation
The E-W-trending Galápagos Rift, an oceanic spreading ridge between the Cocos plate to the north and the Nazca plate to the south, is located north of the Galápagos Islands.

Background:

A large area of hydrothermal vents along the crest of the ridge ENE of the Galápagos Islands was discovered in 1977. The location listed here is the position of Clambake vent, which was surrounded by very youthful sediment-free flows of basaltic sheet lava. This position is at the northern limit of the location error circle for a 1972 earthquake swarm and only a few km south of a concurrent fish kill (Macdonald & Mudie, 1974) that may have been associated with extrusion of these young flows. Morphology of the flows suggested that they were less than 5 years old (Chadwick and Embley, 1994). The Galápagos Rift at this point consists of a small rift valley 3-4 km wide with walls 200-250 m high. A low axial ridge formed by the youngest sediment-free lava flows rises about 20 m above the valley floor, flanked by older marginal ridges. A 2002 expedition discovered evidence for new lava flows covering markers emplaced in 1990.
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Smithsonian / GVP volcano information


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