Precipitated salts| A soil type described by Tom Stevenson (2011) as ‘a sedimentary deposit. Water charged with acid or alkaline material, under pressure of great depth, dissolves various mineral substances from rocks on the sea-bed, which are then held in solution. When the water flows to a place of no great depth or is drained away or evaporates, the pressure is reduced, the minerals are no longer held in solution and precipitate in deposits that may be just a few centimetres or several thousand metres deep. There are five groups: oxides, carbonates, sulphates, phosphates, and chlorides.’
Tom Stevenson (2011) The Sotheby’s Wine Encyclopedia 5th Edition by Tom Stevenson (Dorling Kindersley, 2011), p.17-19.