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Ile de la Possession volcano

Stratovolcano 934 m / 3,064 ft
France, Southern Indian Ocean, -46.42°S / 51.75°E
Current status: normal or dormant (1 out of 5) | Reports
Ile de la Possession volcano books
Typical eruption style: unspecified
Ile de la Possession volcano eruptions: unknown, no recent eruptions No recent earthquakes
TimeMag. / DepthDistanceLocation

Background:

Ile de la Possession, located immediately west of Ile de l'Est in the Crozet archipelago, consists of a stratovolcano intruded by ring and cone dikes and modified by block faulting, marine erosion, and uplift. The structural center of the volcano is located on the western side of the 14 x 19 km wide island, which has an irregular shoreline. The stratovolcano was formed during at least five stages dating back to the Miocene. The eruption of plateau basalts from a rift system during stage IV was followed by a glacial period and then by the eruption of scoria cones and lava flows. The young scoria cones are of probable Holocene age and are distributed over much of the island. They are concentrated at the structural center on the west side and along a series of N-S and NE-trending fractures. The Mont Branca cone on the western flank has been estimated by Bellair (1964) to be not more than a few centuries old.
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Smithsonian / GVP volcano information


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