Seamount Catalog
Development and Maintenance by the EarthRef.org Database Team

Detailed Seamount Information
Onotoa Guyot

IndexSMNT-019S-1756E ClassificationIntermediate C3 Guyot
Location1º 55.80' S
175º 33.02' E
Elongation
Irregularity
2.10 ± 0.09
1.48 ± 0.05
Plate Age126.5 - 128.8 Ma Oceanic ProvinceAbyssal Plain
RegionGilberts Ridge Alternative Names
PlatePacific Plate Age 
Tectonic SettingHotspot Trail Seamount Top305 m
Volume7058 km3 Ocean Bottom4295 m
Shelf Edge
  Volcanic ActivityExtinct
Description
Onotoa Atoll is located at 1¿ 55.8' S, 175¿ 33.0' E and is part of the Gilberts Ridge region on the Pacific Plate. It is 4113 m high with the top at -700 m and the ocean bottom at -4813 m. The atoll has a volume of 11232 km3 and is moderately elongated with an azimuth of approximately 163¿. The edges are irregular and the top is relatively flat with the highest point along the eastern side. A saddle to the south connects Onotoa to Tuba Seamount.
BATHYMETRIC MAPS  [ 4 SEAMOUNT MAPS AND 4 REGIONAL MAPS ] Click to collapse

Onotoa Guyot -- Multibeam data merged with predicted satellite bathymetry
Onotoa Guyot -- Multibeam bathymetry
Onotoa Guyot -- Predicted satellite bathymetry
Onotoa Guyot -- Residual bathymetry


Gilberts Ridge -- Multibeam data merged with predicted satellite bathymetry

Gilberts Ridge -- Multibeam bathymetry

Gilberts Ridge -- Predicted satellite bathymetry

Gilberts Ridge -- Residual bathymetry
GRID FILES  [ 4 SEAMOUNT FILES AND 4 REGIONAL FILES ] Click to expand
EARTHREF.ORG REFERENCE DATABASE  [ 1 RELATED PUBLICATION ] Click to expand
MORPHOLOGY ANALYSIS Click to expand
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