Samples and associated geological data are held at the British Geological Survey for Maritime Coastguard Agency (MCA), Civil Hydrography Programme (CHP), Bathymetric Survey HI1322; Approaches to Scalloway, Area in SqKm: 84, (07/02/2010 to 30/04/2010), Standard: IHO S44ed5 Order 1a. Contract: RRS (2006 LT). FY 2009/10. Contractor: MMT.