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| Detailed Seamount Information |
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| Tuscarora Bank Atoll |    |
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| Index | SMNT-118S-1782W |
Classification | Intermediate B3 Atoll |
| Location | 11º 46.63' S
178º 24.53' W |
Elongation
Irregularity | 2.15 ± 0.11
1.32 ± 0.20 |
| Plate Age | |
Oceanic Province | Abyssal Plain |
| Region | Samoan Hotspot Trail |
Alternative Names | Adolph Knoll, Tuscarora |
| Plate | Pacific Plate |
Age | |
| Tectonic Setting | Hotspot Trail |
Seamount Top | 0 m |
| Volume | 7798 km3 |
Ocean Bottom | 2645 m |
Shelf Edge
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Volcanic Activity | Extinct |
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| | Description | | Tuscarora Atoll is located at 11¿ 46.6' S,178¿ 24.5' W and is part of the Samoa Hotspot Trail on the Pacific Plate. Tuscarora displays the shallow morphology of drowned atoll and is 2645 m tall with the top at 0 m and ocean bottom at -2645 m. The seamount is intermediate in size with a volume of 7797 km3. It is moderately elongated in an east, west direction with an azimuth of approximately 96¿. The edges of the seamount are slightly irregular. It lies along the orientation of the Tuvalu volcanic chain between Nukulaelae and Wallis and is located northwest of Combe Bank and southwest of Robbie. |
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Tuscarora Bank Atoll -- Multibeam data merged with predicted satellite bathymetry |
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Tuscarora Bank Atoll -- Multibeam bathymetry |
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Tuscarora Bank Atoll -- Predicted satellite bathymetry |
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Tuscarora Bank Atoll -- 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 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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Samoan Hotspot Trail -- Tile 3 -- Multibeam data merged with predicted satellite bathymetry |
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Samoan Hotspot Trail -- Tile 3 -- Multibeam bathymetry |
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Samoan Hotspot Trail -- Tile 3 -- Predicted satellite bathymetry |
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Samoan Hotspot Trail -- Tile 3 -- Residual bathymetry |
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Tuscarora Bank Atoll -- Multibeam data merged with predicted satellite bathymetry |
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Tuscarora Bank Atoll -- Multibeam bathymetry |
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Tuscarora Bank Atoll -- Predicted satellite bathymetry |
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Tuscarora Bank Atoll -- 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 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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Samoan Hotspot Trail -- Tile 3 -- Multibeam data merged with predicted satellite bathymetry |
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Samoan Hotspot Trail -- Tile 3 -- Multibeam bathymetry |
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Samoan Hotspot Trail -- Tile 3 -- Predicted satellite bathymetry |
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Samoan Hotspot Trail -- Tile 3 -- 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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Chaproniere, G.C.H. (1985). Late Tertiary and Quaternary foraminiferal biostratigraphy and paleobathymetry of cores and dredge samples from Cruise KK820316 Leg 2. In: Investigations of the northern Melanesian Borderland. Brocher, T.M. (Editors), Circum-Pacific Council for Energy and Mineral Resources, Houston. 3: 103-122. |
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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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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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Sinton, J.M., Johnson, K.T.M. and Price, R.C. (1985). Petrology and geochemistry of volcanic rocks from the Northern Melanesian Borderland. In: Investigations of the northern Melanesian Borderland. Brocher, T.M. (Editors), Circum-Pacific Council for Energy and Mineral Resources, Houston. 3: 35-65. |
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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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| 1058 |
97.0 |
1615.9 |
78.0 |
34.2 |
2.280 |
238.4 |
160.6 |
1.485 |
| 1323 |
97.7 |
2139.7 |
82.8 |
39.0 |
2.125 |
252.0 |
181.4 |
1.389 |
| 1587 |
95.2 |
2646.7 |
86.5 |
42.1 |
2.056 |
218.8 |
200.1 |
1.093 |
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| 10 % Multibeam Coverage |
2.15 ± 0.11 |
1.32 ± 0.20 |
| 2645 m High |
| 1 Summit |
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