Comoros · Shield volcano
La Grille
Grille, La
- Type
- Shield volcano
- Elevation
- 1064m
- Last eruption
- Unknown
- Type
- Shield volcano
- Country
- Comoros
- Region
- Somalian & Antarctic / Madagascar-Comoros Volcanic Province
- Elevation
- 1064m
- Coordinates
- -11.486, 43.350
- Last eruption
- Unknown
- Tectonic setting
- Intraplate / Oceanic crust (< 15 km)
- Landform
- Shield
- Major rock type
- Trachybasalt / Tephrite basanite
Geological summary
La Grille is a basaltic shield volcano at the N end of Grand Comore Island (Ngazidja). Unlike the larger Karthala volcano to the S, it lacks a summit caldera but has an abundance of pyroclastic cones. The cones were erupted along fissures paralleling the irregular N-S summit ridge and from radial fissures that reach as far as the coast. Recent lava flows, some perhaps as young as a few hundred years, have reached the sea from fissures on the lower W, N, and E flanks.
Eruption history
GlossaryDetailed timeline
No eruption records available.
Nearby volcanoes
External links
⚠ For reference only. Not for emergency response.