Northernmost Irish Continental Margin
The northernmost Irish continental margin is the extension of the continental margin north of the Porcupine Bank and west of Ireland. As such, it forms the northern extension of the eastern margin of the Rockall Trough. In its southern and central part, the northernmost Irish continental margin is characterised by relatively steep slopes and numerous canyon systems. Only in the very northern part do slope angles gradually decrease and there the margin is more strongly influenced by across-shelf sediment transport from the now extensive shelf north of Ireland and west of Scotland (Fig. 15.1). This additional sediment input is reflected in the smoothed topography at this stretch of the Irish continental margin. In the south of the area, a relative shallow platform east of the margin is present where a thick sequence of sediment has infilled the northern Porcupine and Slyne Basins. This area has been the focus of intensive hydrocarbon exploration over the last few decades.