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Zealandia Bank

Google Earth Placemark
  • Country
  • Subregion Name
  • Volcano Type
  • Last Known Eruption
  • 0 m
  • 16.880°
  • 145.850°
  • Elevation
  • Latitude
  • Longitude

A seismic swarm that began at Sarigan on 9 August tapered off on 18 August.



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All times are local (= UTC - 9 hours [or 8 hours early April-late October])

2005: August |

17 August 2005              Back to Top

A seismic swarm that began at Sarigan on 9 August tapered off on 18 August.

Sources: Emergency Management Office of the Commonwealth of the Mariana Islands and United States Geological Survey Volcano Hazards Program

10 August 2005              Back to Top

A seismic swarm was recorded at Sarigan beginning on 9 August. By 14 August, 630 earthquakes had been recorded.

Sources: Emergency Management Office of the Commonwealth of the Mariana Islands and United States Geological Survey Volcano Hazards Program



Below is a summary of eruption dates and Volcanic Explosivity Indices (VEI).


Start Date (mm/dd/yyyy)
Stop Date (mm/dd/yyyy)
VEI

The following references are the sources used for data regarding this volcano. References are linked directly to our volcano data file. Discussion of another volcano or eruption (sometimes far from the one that is the subject of the manuscript) may produce a citation that is not at all apparent from the title. Additional discussion of data sources can be found under Volcano Data Criteria.

Corwin G, 1971. Quaternary volcanics of the Mariana Islands. {Unpublished manuscript}, 137 p

Dixon T H, Stern R J, 1983. Petrology, chemistry, and isotopic composition of submarine volcanoes in the southern Mariana arc. {Geol Soc Amer Bull}, 94: 1159-1172

Embley R W, Baker E T, Chadwick W W Jr, Lupton J E, Resing J A, Massoth G J, Nakamura K, 2004. Explorations of Mariana Arc volcanoes reveal new hydrothermal systems. {Eos, Trans Amer Geophys Union}, 85: 37 and 40

IAVCEI, 1973-80. Post-Miocene Volcanoes of the World. {IAVCEI Data Sheets, Rome: Internatl Assoc Volc Chemistry Earth's Interior}.



Zealandia Bank consists of two pinnacles about 1 km apart rising from a submerged bank to near the sea surface between Guguan and Sarigan Islands. One pinnacle reaches >1 m above water at low tide. Andesitic rocks were dredged at the southern peak, which showed some evidence of coral growth. Freshly broken pahoehoe basaltic rocks were recovered on the western flank of Zealandia Bank. The age of the most recent eruptive activity at Zealandia Bank is not known, but a NOAA bathymetric survey in 2004 detected fumarolic activity.