Malumalu
Stratovolcano · United States · 145m (submarine)
- Type
- Stratovolcano
- Country
- United States
- Region
- Southern Pacific Volcanic Regions / Samoan Hotspot Volcano Group
- Elevation
- 145m (submarine)
- Coordinates
- -14.601, -169.787
- Last eruption
- Unknown
- Tectonic setting
- Intraplate / Oceanic crust (< 15 km)
- Landform
- Composite
Geological summary
The Malumalu seamount (also called Southeast Bank) is about 50 km SW of Ta'u Island and 90 km SSE of Tutuila in the Samoan Islands. The edifice, at the end of the Mula volcanic ridge that extends back to Tutuila, has basal diameter of about 25 km. Radiometric measurements were done by Sims et al. (2008), who reported that 230Th/238U, 231Pa/235U, and 226Ra/230Th data indicated at least three flows with maximum eruption ages in the last 350,000 years; one flow with excess 231Pa was inferred to be less than 150 ka, and another with an 226Ra excess was inferred to be less then 8 ka.
From Wikipedia
Malumalu, is a volcanic seamount in American Samoa. Together with Savaii, Upolu and Tutuila, it forms a topographic structure close to the Tonga Trench, which lies about 100 kilometres (62 mi) south. Malumalu lies about 66 kilometres (41 mi) south of Ofu island and is also known as "Southeast Bank". It is about 25 kilometres (16 mi) wide at its base and is part of the Mula ridge, which extends to Tutuila.
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Eruption history
Detailed timeline
No eruption records available.
External links
⚠ For reference only. Not for emergency response.