Aggregates Sub Deposit Type Areas

The aggregate deposits presented here comprise near-shore deposits of non-metallic detrital minerals and calcium carbonate. They occur both on beaches and deeper seabed areas. Marine aggregate deposits are principally extracted for use in the construction industry. Concentrated into their present occurrences by hydrodynamic processes, aggregates may have originally been deposited by mechanisms such as river or glacial deposition. The Marine Aggregates Sub Deposit Type Areas are the same as the main Marine Aggregate point and area layers but are based on the “Sub Deposit type” – of which there are 5 classes – Sand, Gravel, Pebbles/cobbles, Filling sand and Unclassified.