Rockall part of the deeply eroded Rockall Igneous Centre that was formed as part of the North Atlantic Igneous Province, approximately 55 million years ago, when the ancient continent of Laurasia was split apart by plate tectonics. Greenland and Europe separated and the northeast Atlantic Ocean was formed between them, eventually leaving Rockall as an isolated islet. The RV "Celtic Explorer" surveyed the Rockall Bank in 2003. The Irish Light Vessel "Granuaile" (the same name as the steamer on the RIA 1896 botany survey) was chartered by the Geological Survey of Ireland, on behalf of the Department of Communications, Marine and
Rockall on its proximity to the Irish mainland, however the country has never formally claimed sovereignty over the rock. Although Rockall is closer to the UK coast than to the Irish coast, Ireland does not recognise the UK's territorial claim to Rockall, "which would be the basis for a claim to a 12-mile territorial sea". Ireland regards Rockall as irrelevant when determining the boundaries of the Exclusive Economic Zones (EEZ) as the rock is uninhabitable and in signing the United Nations Convention on the Law of the Sea (UNCLOS) in 1997, the UK has agreed that "Rocks which cannot sustain human