Samples and associated geological data are held at the British Geological Survey for Maritime Coastguard Agency (MCA), Civil Hydrography Programme (CHP), Bathymetric Survey HI1470; Eastern Approach to Isles of Scilly, Area in SqKm: 523, (13/05/2016 to 19/06/2016), Standard: IHO S44ed5 Order 1a. Contract: Medium. FY 2016/17. Contractor: MMT UK.