The limestome influenced soils of Sancerre have something in common with the soils of Champagne, Chablis and Burgundy. They are all Kimmeridgian; a mixture of clay with Kimmeridge limestone. The underlying geology was laid down in the Upper Jurassic,150 million years ago. The rock base has a special characteristic: the abundance of a family of tiny oysters called Exogyra virgule, in the marls and the marly limestone. The name is English and was dientified in Enlgand as the limestone basin stretches across the English Channel. The three soil types of Sancerre are all calcareous but with particular minerality in the soils of the eastern margin along the ridge of Sancerre town. It is fascinating that the fine wines as different but as excellent as Corton Charlmagne, Grand Cru Chablis and Sancerre all derive from the same group of soils, albeit with their own identity.
Posted on 10/06/2013 at 03:59PM