 Niu Guyot |    |
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| Index | SMNT-047N-1725E |
Classification | Small A3 Guyot |
| Location | 4º 43.36' N
172º 30.55' E |
Elongation
Irregularity | 2.28 ± 0.19
1.18 ± 0.13 |
| Plate Age | 148.2 - 149.3 Ma |
Oceanic Province | Abyssal Plain |
| Region | Gilberts Ridge |
Alternative Names | |
| Plate | Pacific Plate |
Age | |
| Tectonic Setting | Hotspot Trail |
Seamount Top | 1110 m |
| Volume | 2857 km3 |
Ocean Bottom | 4175 m |
Shelf Edge
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Volcanic Activity | Extinct |
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| | Description | | Niu Guyot is located at 4¿ 43.7' N, 172¿ 30.5' E and is part of the Gilberts Ridge region on the Pacific Plate. It is 3095 m high with the top at -1200 m and the ocean bottom at -4295 m. The guyot has a volume of 3490 km3 and is elongated with two cones separated by a saddle, which may represent two separate volcanoes. The east and northwest rifts define the length of the volcano, which is heavily covered with corals. The observed flattish top results in the classification of Niu as a guyot. It is the northern most volcano on a common platform including Pulu Guyot and Sua Seamount. |
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Niu Guyot -- Multibeam data merged with predicted satellite bathymetry |
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Niu Guyot -- Multibeam bathymetry |
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Niu Guyot -- Predicted satellite bathymetry |
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Niu Guyot -- Residual bathymetry |
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Gilberts Ridge -- Multibeam data merged with predicted satellite bathymetry |
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Gilberts Ridge -- Multibeam bathymetry |
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Gilberts Ridge -- Predicted satellite bathymetry |
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Gilberts Ridge -- Residual bathymetry |
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Niu Guyot -- Multibeam data merged with predicted satellite bathymetry |
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Niu Guyot -- Multibeam bathymetry |
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Niu Guyot -- Predicted satellite bathymetry |
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Niu Guyot -- Residual bathymetry |
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Gilberts Ridge -- Multibeam data merged with predicted satellite bathymetry |
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Gilberts Ridge -- Multibeam bathymetry |
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Gilberts Ridge -- Predicted satellite bathymetry |
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Gilberts Ridge -- Residual bathymetry |
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High resolution 40Ar/39Ar ages for the Gilberts Ridge: sample AVON2-1-7 -- 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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| 2336 |
122.3 |
459.3 |
38.9 |
17.7 |
2.199 |
110.2 |
84.8 |
1.300 |
| 2643 |
125.9 |
588.8 |
43.3 |
20.2 |
2.147 |
113.5 |
95.4 |
1.190 |
| 2949 |
133.5 |
743.9 |
60.6 |
24.2 |
2.507 |
117.5 |
111.9 |
1.050 |
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| 31 % Multibeam Coverage |
2.28 ± 0.19 |
1.18 ± 0.13 |
| 3065 m High |
| 1 Summit |
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