Supply Reef is a submerged circular reef of volcanic origin in the Northern Mariana Islands chain, about 10 kilometres (6 mi) NW of the Maug Islands. Presently, this igneous seamount is roughly 8 metres (26 ft) below the ocean's surface and about 100 m (300 ft) in diameter. Apparent episodes of submarine volcanism were noted on December 22–24 and 26–27 in 1989.
| Supply Reef | |
|---|---|
  Supply Reef (North Pacific ) | |
| Summit depth | −8 m (−26 ft) |
| Location | |
| Location | Northern Mariana Islands |
| Coordinates | 20°08′N 145°6′E / 20.133°N 145.100°E |
| Country | United States |
| Geology | |
| Type | Submarine volcano |
| Last eruption | September to December 1989 |
Volcanic and seismic activity has been noted, as well as hard and soft corals.[1]
References
- "Supply Reef". Global Volcanism Program. Smithsonian Institution. Retrieved 2017-03-03.