Geologic Background:
Esmeralda Bank is a massive submarine volcano
with three summit cones oriented along a N-S line. Their
summits are from 43 to 140 m beneath the sea surface. The
highest, middle peak contains a 3-km-wide caldera open to
the west and several parasitic cones. Frequent sulfur
boils and water discoloration have been observed. T
Historic Activity:
- his shallow submarine volcano, 350 km S of Pagan and
175 km N of Guam, is the southernmost historically active
site in the Marianas.
- Eruptions in 1944, 1964, 1970, 1975, 1982, and
1987.
Recent Activity:
Data Sources:
- Smithsonian's SEAN Bulletin (V. 17, No. 6 and V. 12,
No. 8)
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