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| Detailed Seamount Information |
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| Willoughby Seamount |    |
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| Index | SMNT-079N-1619W |
Classification | Very Small A1 Seamount |
| Location | 7º 52.87' N
161º 56.59' W |
Elongation
Irregularity | 1.20 ± 0.06
1.03 ± 0.00 |
| Plate Age | 111.3 - 111.5 Ma |
Oceanic Province | Abyssal Plain |
| Region | Line Islands |
Alternative Names | |
| Plate | Pacific Plate |
Age | |
| Tectonic Setting | Hotspot Trail |
Seamount Top | 2630 m |
| Volume | 167 km3 |
Ocean Bottom | 4045 m |
Shelf Edge
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Volcanic Activity | |
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| | Description | | Willoughby Seamount is located at 7¿ 52.9' N, 161¿ 56.6' W and is part of the Line Islands on the Pacific Plate. It is 1415 m high with the top at -2630 m and ocean bottom at -4045 m. The seamount is very small with a volume of 167 km3. It is fairly round with smooth edges and little elongation or irregularity. The azimuth is at approximately 116¿. |
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Willoughby Seamount -- Multibeam data merged with predicted satellite bathymetry |
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Willoughby Seamount -- Multibeam bathymetry |
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Willoughby Seamount -- Predicted satellite bathymetry |
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Willoughby Seamount -- Residual bathymetry |
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Willoughby Seamount -- Multibeam data merged with predicted satellite bathymetry |
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Willoughby Seamount -- Multibeam bathymetry |
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Willoughby Seamount -- Predicted satellite bathymetry |
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Willoughby Seamount -- Residual bathymetry |
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Sager, W.W. and Keating, B.H. (1984). Paleomagnetism of line islands seamounts: evidence for late cretaceous and early tertiary volcanism. Journal of Geophysical Research 89: doi: 10.1029/JB080i013p11135. issn: 0148-0227. |
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Schlanger, S.O., Garcia, M.O., Keating, B.H., Naughton, J.J., Sager, W.W., Haggerty, J.A., Philpotts, J.A. and Duncan, R.A. (1984). Geology and geochronology of the Line Island. Journal of Geophysical Research 89: doi: 10.1029/JB080i013p11261. issn: 0148-0227. |
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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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| 3196 |
193.0 |
67.2 |
10.7 |
8.4 |
1.262 |
30.4 |
29.4 |
1.036 |
| 3338 |
196.7 |
83.8 |
11.6 |
9.7 |
1.200 |
33.8 |
32.7 |
1.034 |
| 3479 |
198.3 |
101.9 |
12.5 |
10.9 |
1.148 |
37.0 |
35.9 |
1.031 |
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| 9 % Multibeam Coverage |
1.20 ± 0.06 |
1.03 ± 0.00 |
| 1415 m High |
| 1 Summit |
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