Samples and associated geological data are held at the British Geological Survey for Maritime Coastguard Agency (MCA), Civil Hydrography Programme (CHP), Bathymetric Survey HI1363; Inner Approaches to the Firth of Lorne, Area in SqKm: 974, (08/08/2011 to 12/03/2012), Standard: IHO S44ed5 Order 1a. Contract: Medium (2011). FY 2012/13. Contractor: NetSurvey.