Rocard
Cono · France · 2515 m (sottomarino)
- Tipo
- Cono
- Paese
- France
- Regione
- Southern Pacific Volcanic Regions / Society Islands Hotspot Volcano Group
- Altitudine
- 2515 m (sottomarino)
- Coordinate
- -17.662, -148.586
- Ultima eruzione
- 1972
- Contesto tettonico
- Intraplate / Oceanic crust (< 15 km)
- Forma vulcanica
- Composite
- Roccia principale
- Trachyte / Trachydacite
Sintesi geologica
Rocard is a small volcanic seamount about 60 km WNW of Mehetia and 28 km ESE of Teahitia seamount. The summit lies 2,500 m below sea level on a submarine edifice about 8 km in diameter. Seismicity in 1966, 1971, and 1972 may have been caused by submarine eruptions (Talandier and Custer, 1976). Rocks dredged in 1986 "exploded" when they reached the surface, suggesting recent lava extrusion that had not yet had time to equilibrate with pressure and temperature conditions on the submerged flanks of the edifice.
Sintesi da Wikipedia
Riassunto in ingleseRocard is a submarine volcano in French Polynesia, located between the island of Mehetia and the Teahitia seamount. The volcano's summit is 2515m below sealevel. It has erupted in March 1966, September 1971, and July 1972.
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Storia delle eruzioni
Cronologia dettagliata
- 1972VEI 0Osservata1972-07-04 – 1972-07-19
- 1971VEI 0Osservata1971-09-06 – In corso
- 1966VEI 0Osservata1966-03-09 – 1966-03-20
Link esterni
⚠ Solo a scopo informativo. Non adatto a situazioni di emergenza.