Samples and associated geological data are held at the British Geological Survey for Maritime Coastguard Agency (MCA), Civil Hydrography Programme (CHP), Bathymetric Survey HI1241; Fanad head to the Tuns (JIBS), Area in SqKm: -357, (01/11/2007 to 09/05/2008), Standard: IHO S44ed5 Order 1a. Contract: INTERREG. FY 2007/08. Contractor: Irish Marine Institute.