Chalk | A soil type described by Tom Stevenson (2011) as ‘a type of limestone, chalk is a soft, cool, porous, brilliant-white, sedimentary, alkaline rock that encourages grapes with a relatively high acidity level. It also allows the vine’s roots to penetrate and provides excellent drainage, while at the same time retaining sufficient moisture for nourishment. One of the few finer geological points that should be adhered to is that which distinguishes chalk from the numerous hard limestone rocks that do not possess the same physical properties.’


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