f Fault-associated seabed mounds in the Porcupine basin - offshore Ireland

Some 31 separate mounds have been identified from seismic reflection records located in a relatively narrow east-west swath across the Porcupine Basin off western Ireland in water depths ranging from 650m to 1000m. The isolated reef-like features are found on a generally smooth and unlithified seabed. Their size is impressive, often being over 1km across and over 100m high.