| Anton Dohrn Seamount | |
|---|---|
 | |
  Anton Dohrn Seamount (North Atlantic) | |
| Summit depth | 600 metres |
| Height | 1,500 m |
| Location | |
| Location | North Atlantic Ocean |
| Coordinates | 57°30′N 11°00′W / 57.500°N 11.000°W[1] |
| Country | United Kingdom (EEZ) |
| Geology | |
| Type | Guyot |
| Last eruption | ~40 million years |
The Anton Dohrn Seamount is a guyot in the Rockall Trough in the northeast Atlantic. It is 1.8 kilometres (1.1 mi) high and is topped with pinnacles, one of which reaches a depth of 530 metres (1,740 ft). Away from the flat top upon which the pinnacles rest, the slopes fall off steeply into the Rockall Trough and a moat in the sediment that surrounds the seamount.
It appears to be a volcano formed by basaltic lava and tuff. It formed during the Cretaceous and Paleogene and was proposed to be a source for bentonite layers across the British Isles. After the Cretaceous, subsidence and erosion lowered its top until it sank below sea level. The seamount was discovered in 1958.
Anton Dohrn Seamount hosts a diverse ecosystem characterized by reefs formed by cold water corals, sponges and xenophyophorans, which themselves host a number of animals. It has been affected by human fishing operations, however.
- ^ Jones et al. 1994, p. 239.