Supply Reef
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.
Map including Supply Reef (labeled as 'reef') (DMA, 1983)
| Supply Reef | |
|---|---|
  Supply Reef (North Pacific ) | |
| Summit depth | −8 m (−26 ft) |
| Location | |
| Location | Northern Mariana Islands |
| Coordinates | 20°08′N 145°6′E |
| Country | United States |
| Geology | |
| Type | Submarine volcano |
| Last eruption | September to December 1989 |
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