 Siapo Seamount |    |
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| Index | SMNT-026S-1754W |
Classification | Very Small B1 Seamount |
| Location | 2º 34.46' S
175º 24.21' W |
Elongation
Irregularity | 1.24 ± 0.03
1.25 ± 0.02 |
| Plate Age | 120.3 - 120.5 Ma |
Oceanic Province | Abyssal Plain |
| Region | Tokelau Seamounts |
Alternative Names | |
| Plate | Pacific Plate |
Age | |
| Tectonic Setting | Hotspot Trail |
Seamount Top | 2135 m |
| Volume | 841 km3 |
Ocean Bottom | 5305 m |
Shelf Edge
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Volcanic Activity | Extinct |
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| | Description | | Siapo Seamount is located at 2¿ 34.3' S, 175¿ 24.1' W and is part of the Tokelau Seamounts on the Pacific Plate. It is 3212 m high with the top at -2200 m and ocean bottom at -5412 m. The seamount has a volume of 1258 km3 and is fairly round with slightly irregular edges. There are five predominate rifts meeting at a single summit. A saddle connects this seamount with the Polo Seamount to the south. Dredge AVON2-D39 was taken on the south trending rift and dredge AVON2-D40 was taken on the north trending rift. |
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Siapo Seamount -- Multibeam data merged with predicted satellite bathymetry |
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Siapo Seamount -- Multibeam bathymetry |
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Siapo Seamount -- Predicted satellite bathymetry |
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Siapo Seamount -- Residual bathymetry |
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Tokelau Seamounts -- Multibeam data merged with predicted satellite bathymetry |
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Tokelau Seamounts -- Multibeam bathymetry |
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Tokelau Seamounts -- Predicted satellite bathymetry |
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Tokelau Seamounts -- Residual bathymetry |
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Siapo Seamount -- Multibeam data merged with predicted satellite bathymetry |
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Siapo Seamount -- Multibeam bathymetry |
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Siapo Seamount -- Predicted satellite bathymetry |
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Siapo Seamount -- Residual bathymetry |
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Tokelau Seamounts -- Multibeam data merged with predicted satellite bathymetry |
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Tokelau Seamounts -- Multibeam bathymetry |
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Tokelau Seamounts -- Predicted satellite bathymetry |
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Tokelau Seamounts -- Residual bathymetry |
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High resolution 40Ar/39Ar ages for the Tokelau seamount trail: sample AVON2-39-17 -- graphs, spreadsheet |
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High resolution 40Ar/39Ar ages for the Tokelau seamount trail: sample AVON2-39-38 -- graphs, spreadsheet |
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High resolution 40Ar/39Ar ages for the Tokelau seamount trail: sample AVON2-39-33 -- graphs, spreadsheet |
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High resolution 40Ar/39Ar ages for the Tokelau seamount trail: sample AVON2-40-1 -- graphs, spreadsheet |
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High resolution 40Ar/39Ar ages for the Tokelau seamount trail: sample AVON2-40-9 -- graphs, spreadsheet |
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High resolution 40Ar/39Ar ages for the Tokelau seamount trail: sample AVON2-40-36 -- graphs, spreadsheet |
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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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| 3403 |
56.8 |
50.6 |
9.7 |
7.6 |
1.273 |
32.5 |
25.5 |
1.276 |
| 3720 |
56.6 |
75.8 |
11.4 |
9.3 |
1.223 |
38.2 |
31.1 |
1.230 |
| 4037 |
59.5 |
108.3 |
13.5 |
11.1 |
1.218 |
46.5 |
37.2 |
1.251 |
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| 95 % Multibeam Coverage |
1.24 ± 0.03 |
1.25 ± 0.02 |
| 3170 m High |
| 1 Summit |
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