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Mayotte Island volcan

Mise à jour: 5 févr.. 2023 05:58 GMT -
Shield volcano 660 m / 2,165 ft
France, Western Indian Ocean, -12.83°S / 45.17°E
Condition actuelle: en vigilance - niveau agité (2 sur 5)
Last update: 24 févr. 2022 (Submarine eruption off the East coast of Mayotte)

Mayotte, located in the Mozambique Channel between the northern tip of Madagascar and the eastern coast of Africa, consists two main volcanic islands, Grande Terre and Petite Terre, and roughly twenty islets within a barrier-reef lagoon complex.
A submarine eruption occurred from a vent approx. 50 km east of the islands during 2018-19, first detected by intense seismic activity and significant eastward shifts in GPS position of the Mayotte island itself, and later observed during submarine surveys.

Montrer carte interactive
Style éruptif tipique: unspecified
Eruptions du volcan Mayotte Island: 2018 (3 Jul) - 2019 (around 20 Aug)
2050 BC ± 500 years

Derniers séismes proches

HeureMag. / ProfondeurDistance/Lieu
mercredi, 1 février 2023 GMT (4 séismes)
1 févr.. 2023 01:23 GMT

32 km
26 km (16 mi)
19 km à l'est de Mamoudzou, Mayotte
1 févr. 2023 04:22 (GMT +3) (1 févr.. 2023 01:22 GMT)

33 km
28 km (17 mi)
21 km à l'est de Mamoudzou, Mayotte
1 févr.. 2023 01:23 GMT

32 km
26 km (16 mi)
19 km à l'est de Mamoudzou, Mayotte
1 févr. 2023 04:22 (GMT +3) (1 févr.. 2023 01:22 GMT)

33 km
28 km (17 mi)
21 km à l'est de Mamoudzou, Mayotte


Mayotte Island in the Mozambique Channel between the northern tip of Madagascar and the eastern coast of Africa consists of two volcanoes with diverse geochemistry that were active from the Pliocene to the Holocene. Lavas on the NE were active from about 4.7 to 1.4 million years and on the south from about 7.7 to 2.7 million years. Mafic activity resumed on the north from about 2.9 to 1.2 million years and on the south from about 2 to 1.5 million years. Morphologically youthful-looking maars are present on Mayotte Island, and Zinke et al. (2003) found several pumice layers of Holocene age in gravity cores on the barrier reef-lagoon complex at Mayotte.
Smithsonian / GVP volcano information

2018-2019 submarine eruption
A submarine eruption occurred during 2018-19 at the ocean floor approx. 50 km east of Mayotte Island. The eruption produced vast submarine lava flows. It was detected by substantial earthquake activity and shifts in the GPS position of the main island.

See also: Sentinel hub | Landsat 8 | NASA FIRMS
ven., 25 déc. 2020, 12:34

Mayotte Island volcano (France, Western Indian Ocean) activity update: Submarine eruption off the East coast of Mayotte

Map of earthquakes stronger than magnitude 3.8 from the 10 May 2018 to the 29 October 2018. Purple and blue earthquakes occured at the beginning of the crisis while yellow and red earthquakes occurred months later. The mean horizontal error on the location is around 15 km. Thus, we cannot see an orientation of earthquakes within any of the two swarm regions. (image: BRGM)
In May 2019, a new volcano was discovered 50 km off the East coast of Mayotte by temporal comparison of bathymetric data. It lies on the seafloor at a depth of 3500 m. It is 820 m tall and the estimated erupted volume is over 5 km3. ... Read all
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