Greensand | A soil type described by Tom Stevenson (2011) as ‘‘A dark greenish coloured, glauconite-rich sand of Cretaceous origin found in some vineyards in southeast England. Greensand is used as a water softener, which is ironic considering that it is found over chalk subsoil, known for its hard water.’

Bibliography

Tom Stevenson (2011) The Sotheby’s Wine Encyclopedia 5th Edition by Tom Stevenson (Dorling Kindersley, 2011), p.17-19.