Samples and associated geological data are held at the British Geological Survey for Maritime Coastguard Agency (MCA), Civil Hydrography Programme (CHP), Bathymetric Survey HI1479; Off Casquets TSS, Area in SqKm: 467, (01/06/2015 to 29/06/2015), Standard: IHO S44ed5 Order 1a. Contract: Medium. FY 2015/16. Contractor: MMT UK.