A Gravity Anomaly Map of the Irish Western Seaboard

This paper describes the results of two marine gravity surveys undertaken by the Dublin Institute for Advanced Studies and the Institut ffir Geophysik, University of Hamburg. The surveys cover a large part of the continental shelf to the west of Ireland and east of the Rockall and Porcupine basins between latitudes 51.2oN and 55.2°N. The two data sets have been combined with the land data of the Dublin Institute for Advanced Studies to produce a unified gravity anomaly map of the west of Ireland and its continental shelf. The offshore extension of various onshore anomalies, notably those due to Caledonian granites and Carboniferous basins, are delineated by the new map.