 Matai Seamount |    |
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| Index | SMNT-067S-1734W |
Classification | Small B1 Seamount |
| Location | 6º 41.10' S
173º 25.33' W |
Elongation
Irregularity | 1.30 ± 0.03
1.21 ± 0.01 |
| Plate Age | |
Oceanic Province | |
| Region | Tokelau Seamounts |
Alternative Names | |
| Plate | Pacific Plate |
Age | |
| Tectonic Setting | Hotspot Trail |
Seamount Top | 1900 m |
| Volume | 1824 km3 |
Ocean Bottom | 5395 m |
Shelf Edge
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Volcanic Activity | Extinct |
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| | Description | | Matai Seamount is located at 6¿ 41.1' S, 173¿ 25.3' W and is part of the Tokelau Seamounts on the Pacific Plate. It is 3495 m high with the top at -1900 m and the ocean bottom at -5395 m. The seamount has a volume of 1824 km3 and is fairly round with slightly irregular edges. Five predominant rifts are seen radiating out from a central summit. A saddle to the northwest connects Matai to an unnamed seamount. Dredge AVON2-D48 was taken on the west trending rift and dredge AVON2-D49 was taken on the northwest trending rift. |
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Matai Seamount -- Multibeam data merged with predicted satellite bathymetry |
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Matai Seamount -- Multibeam bathymetry |
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Matai Seamount -- Predicted satellite bathymetry |
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Matai 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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Matai Seamount -- Multibeam data merged with predicted satellite bathymetry |
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Matai Seamount -- Multibeam bathymetry |
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Matai Seamount -- Predicted satellite bathymetry |
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Matai 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 AVON2-48-19 -- graphs, spreadsheet |
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High resolution 40Ar/39Ar ages for the Tokelau seamount trail: sample AVON2-48-27 -- 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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| 3298 |
147.4 |
113.1 |
14.1 |
11.0 |
1.281 |
45.8 |
38.1 |
1.200 |
| 3648 |
151.2 |
166.3 |
17.3 |
13.4 |
1.289 |
56.0 |
46.3 |
1.210 |
| 3997 |
143.6 |
236.6 |
21.2 |
15.8 |
1.344 |
67.2 |
55.4 |
1.212 |
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| 85 % Multibeam Coverage |
1.30 ± 0.03 |
1.21 ± 0.01 |
| 3495 m High |
| 1 Summit |
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