2007ChateauFayauCadillac

Sans Barsac and Sauternes had probably been singled out before then, thanks to their peculiar geology and geography. Gravels deposited over calcareous, marly and sandy clay substrates were ripped from the Pyrenees and the Central Massif and carried by the Garonne river and several of its affluents. The river had shifted over many different beds, east and west, during the quaternary era. Successive deposits created a complex structure of terraces with different orientations, layers of gravels, and minerals of various natures.