Argillaceous soils | A soil type defined by Tom Stevenson (2011, p.17) as ‘a group of sedimentary soils, commonly clays, shales, mudstones, siltstones, and marls.’

Bibliography

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