Loam is a soil type described by Tom Stevenson (2011) as ‘a warm, soft, crumbly soil with roughly equal proportions of clay, sand, and silt. It is perfect for large-cropping mediocre-quality wines, but too fertile for fine wines.’
Bibliography
Tom Stevenson (2011) The Sotheby’s Wine Encyclopedia 5th Edition by Tom Stevenson (Dorling Kindersley, 2011), p.17-19.