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 | |
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Supply Reef (North Pacific ) Show map of 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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