 Ava Seamount |    |
 |
| Index | SMNT-023S-1750E |
Classification | Very Small B1 Seamount |
| Location | 2º 16.39' S
174º 57.22' E |
Elongation
Irregularity | 1.12 ± 0.07
1.31 ± 0.05 |
| Plate Age | 127.1 - 127.4 Ma |
Oceanic Province | Abyssal Plain |
| Region | Gilberts Ridge |
Alternative Names | |
| Plate | Pacific Plate |
Age | |
| Tectonic Setting | Hotspot Trail |
Seamount Top | 1650 m |
| Volume | 680 km3 |
Ocean Bottom | 4600 m |
Shelf Edge
| |
Volcanic Activity | Extinct |
|
| | Description | | Ava Seamount is located at 2¿ 16.3' S, 174¿ 57.2' E and is part of the Gilberts Ridge region on the Pacific Plate. It is 2973 m high with the top at -1700 m and ocean bottom at -4673 m. The seamount has a volume of 941 km3 and is fairly round with very little elongation. The edges are slightly irregular and there are a lot of small radial like ridges on the seamount. Ava is the western most volcano in a cluster on a common platform, which includes Tuba Seamount. Dredge number AVON2-D18 was taken off the western trending rift. |
| |
|
|
 |
Ava Seamount -- Multibeam data merged with predicted satellite bathymetry |
 |
|
Ava Seamount -- Multibeam bathymetry |
|
|
Ava Seamount -- Predicted satellite bathymetry |
|
|
Ava Seamount -- Residual bathymetry |
|
|
|
Gilberts Ridge -- Multibeam data merged with predicted satellite bathymetry |
|
|
Gilberts Ridge -- Multibeam bathymetry |
|
|
Gilberts Ridge -- Predicted satellite bathymetry |
|
|
Gilberts Ridge -- Residual bathymetry |
|
|
|
|
|
|
Ava Seamount -- Multibeam data merged with predicted satellite bathymetry |
|
|
Ava Seamount -- Multibeam bathymetry |
|
|
Ava Seamount -- Predicted satellite bathymetry |
|
|
Ava Seamount -- Residual bathymetry |
|
|
|
Gilberts Ridge -- Multibeam data merged with predicted satellite bathymetry |
|
|
Gilberts Ridge -- Multibeam bathymetry |
|
|
Gilberts Ridge -- Predicted satellite bathymetry |
|
|
Gilberts Ridge -- Residual bathymetry |
|
|
|
|
|
|
High resolution 40Ar/39Ar ages for the Gilberts Ridge: sample AVON2-18-16 -- graphs, spreadsheet |
 |
|
|
|
|
| Depth |
Azimuth |
Area |
Length |
Width |
Elongation |
Contour |
Ellipse |
Irregularity |
|
| m |
degrees |
km2 |
km |
km |
ratio |
km |
km |
ratio |
|
|
| 2830 |
74.2 |
70.2 |
11.0 |
9.2 |
1.197 |
40.6 |
29.9 |
1.360 |
| 3125 |
74.3 |
105.9 |
12.6 |
11.3 |
1.121 |
46.9 |
36.6 |
1.284 |
| 3420 |
86.4 |
146.4 |
14.3 |
13.6 |
1.055 |
55.0 |
42.9 |
1.280 |
|
| 93 % Multibeam Coverage |
1.12 ± 0.07 |
1.31 ± 0.05 |
| 2950 m High |
| 1 Summit |
|
|
|
|