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| Detailed Seamount Information |
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| Taumatau Seamount |    |
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| Index | SMNT-133S-1722W |
Classification | Very Small A1 Seamount |
| Location | 13º 15.39' S
172º 15.05' W |
Elongation
Irregularity | 1.23 ± 0.07
0.87 ± 0.08 |
| Plate Age | |
Oceanic Province | Abyssal Plain |
| Region | Samoan Hotspot Trail |
Alternative Names | |
| Plate | Pacific Plate |
Age | |
| Tectonic Setting | Hotspot Trail |
Seamount Top | 820 m |
| Volume | 869 km3 |
Ocean Bottom | 3040 m |
Shelf Edge
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Volcanic Activity | Extinct |
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| | Description | | Taumatau Seamount is located at 13¿ 15.4' S, 172¿ 15' W and is part of the Samoan Hotspot Trail on the Pacific Plate. The seamount is 2220 m high with the top at -820 m and the ocean bottom at -3040 m. It is very small with a volume of 869 km3. The seamount is relatively round with smooth edges and little elongation or irregularity. The azimuth is at approximately 75¿. |
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Taumatau Seamount -- Multibeam data merged with predicted satellite bathymetry |
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Taumatau Seamount -- Multibeam bathymetry |
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Taumatau Seamount -- Predicted satellite bathymetry |
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Taumatau Seamount -- Residual bathymetry |
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Samoan Hotspot Trail -- Multibeam bathymetry |
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Samoan Hotspot Trail -- Predicted satellite bathymetry |
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Samoan Hotspot Trail -- Tile 1 -- Multibeam data merged with predicted satellite bathymetry |
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Samoan Hotspot Trail -- Tile 1 -- Multibeam bathymetry |
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Samoan Hotspot Trail -- Tile 1 -- Predicted satellite bathymetry |
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Samoan Hotspot Trail -- Tile 1 -- Residual bathymetry |
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Samoan Hotspot Trail -- Tile 2 -- Multibeam data merged with predicted satellite bathymetry |
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Samoan Hotspot Trail -- Tile 2 -- Multibeam bathymetry |
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Samoan Hotspot Trail -- Tile 2 -- Predicted satellite bathymetry |
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Samoan Hotspot Trail -- Tile 2 -- Residual bathymetry |
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Taumatau Seamount -- Multibeam data merged with predicted satellite bathymetry |
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Taumatau Seamount -- Multibeam bathymetry |
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Taumatau Seamount -- Predicted satellite bathymetry |
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Taumatau Seamount -- Residual bathymetry |
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Samoan Hotspot Trail -- Multibeam bathymetry |
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Samoan Hotspot Trail -- Predicted satellite bathymetry |
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Samoan Hotspot Trail -- Tile 1 -- Multibeam data merged with predicted satellite bathymetry |
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Samoan Hotspot Trail -- Tile 1 -- Multibeam bathymetry |
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Samoan Hotspot Trail -- Tile 1 -- Predicted satellite bathymetry |
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Samoan Hotspot Trail -- Tile 1 -- Residual bathymetry |
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Samoan Hotspot Trail -- Tile 2 -- Multibeam data merged with predicted satellite bathymetry |
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Samoan Hotspot Trail -- Tile 2 -- Multibeam bathymetry |
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Samoan Hotspot Trail -- Tile 2 -- Predicted satellite bathymetry |
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Samoan Hotspot Trail -- Tile 2 -- Residual bathymetry |
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Brocher, T.M. (1985). On the age progression of the seamounts west of the Samoan Islands, SW Pacific. In: Investigations of the Northern Melanesian Borderland. Brocher, T.M. (Editors), Circum-Pacific Council for Energy and Mineral Resources, Houston. 3: 173-185. |
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Duncan, R.A. (1985). Radiometric ages from volcanic rocks along the New Hebrides-Samoa Lineament. In: Investigations of the northern Melanesian Borderland. Brocher, T.M. (Editors), Circum-Pacific Council for Energy and Mineral Resources, Houston. 3: 67-76. |
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Farley, K.A. (1995). Rapid cycling of subducted sediments into the Samoan mantle plume. Geology 23(6): 531-534. |
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Hart, S.R. (2004). Collaborative research: The Samoan Hotspot, Past and Present. In: Collaborative research: The Samoan Hotspot, Past and Present. Woods Hole Oceanographic Institution, Woods Hole, MA. |
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Hill, P.J. and Tiffin, D.L. (1993). Geology, sediment patterns, and widespread deformation on the sea floor off Western Samoa revealed by wide-swath imagery. Geo-Marine Letters 13(2): 116-125. |
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Keating, B.H., Helsley, C.E. and Karogodina, I. (2000). Sonar studies of submarine mass wasting and volcanic structures off Savaii Island, Samoa. In: Landslides and Tsunamis. Keating, B.H., Waythomas, C.F. and Dawson, A.G. (Editors), Birkhaeuser Verlag, Basel, Switzerland. 157(6-8): 1,285-1,313. |
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Natland, J.H. (1980). The progression of volcanism in the Samoan linear volcanic chain. In: The Jackson Volume. Irving, A.J. and Dungan, M.A. (Editors), Kline Geology Laboratory, Yale University, New Haven. 280-A(2): 709-735. |
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Newman, S., Finkel, R.C. and MacDougall, J.D. (1984). Comparison of (super 230) Th- (super 238) U disequilibrium systematics in lavas from three hot spot regions; Hawaii, Prince Edward and Samoa. Geochimica et Cosmochimica Acta 48(2): 315-324. doi: 10.1016/0016-7037(84)90253-9. |
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Poreda, R.J. and Farley, K.A. (1992). Rare gases in Samoan xenoliths. Earth and Planetary Science Letters 113(1-2): 129-144. doi: 10.1016/0012-821X(92)90215-H. |
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Wright, E. and White, W.M. (1987). The origin of Samoa; new evidence from Sr, Nd, and Pb isotopes. Earth and Planetary Science Letters 81(2-3): 151-162. doi: 10.1016/0012-821X(87)90152-X. |
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Workman, R.K., Hart, S.R., Jackson, M., Regelous, M., Farley, K.A., Blusztajn, J., Kurz, M. and Staudigel, H. (2004). Recycled metasomatized lithosphere as the origin of the Enriched Mantle II (EM2) end-member: Evidence from the Samoan Volcanic Chain. Geochemistry Geophysics Geosystems 5: doi: 10.1029/2003GC000623. issn: 1525-2027. |
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Hart, S., Coetzee, M., Workman, R., Blusztajn, J., Johnson, K., Sinton, J., Steinberger, B. and Hawkins, J. (2004). Genesis of the Western Samoa seamount province: age, geochemical fingerprint and tectonics. Earth and Planetary Science Letters 227(1-2): 37-56. doi: 10.1016/j.epsl.2004.08.005. |
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| Depth |
Azimuth |
Area |
Length |
Width |
Elongation |
Contour |
Ellipse |
Irregularity |
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| m |
degrees |
km2 |
km |
km |
ratio |
km |
km |
ratio |
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| 1708 |
69.6 |
322.7 |
24.5 |
18.9 |
1.296 |
62.0 |
64.5 |
0.961 |
| 1930 |
74.7 |
401.6 |
26.9 |
21.4 |
1.254 |
60.5 |
71.7 |
0.843 |
| 2152 |
79.3 |
461.7 |
27.7 |
24.0 |
1.154 |
61.1 |
76.5 |
0.799 |
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| 32 % Multibeam Coverage |
1.23 ± 0.07 |
0.87 ± 0.08 |
| 2220 m High |
| 1 Summit |
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