Petit Chablis (18% of production)
The terroirs of the Petit Chablis appellation are located on the higher slopes or the beginnings of the plateau. They are made up of hard, brown limestone, or sometimes silty, sandy soils, in general at an elevation of between 230 and 280 meters, with varied orientation.
Chablis AOC (66% of production)
No other French wine region has affirmed such faith in geology. The main bedrock comes from the Jurassic epoch, or more precisely the Kimmeridgean age (150 million years ago). Deposits of tiny oysters can be found in the rock, which were left by the warm, shallow sea that once covered this territory. These creatures were in the shape of a comma, which gives rise to their name: Exogyra virgula.
Chablis Premier Cru (14% of production)
As for Chablis, the main bedrock dates from the Jurassic, or more precisely the Kimmeridgean era. One particularity concerning Chablis Premier Cru is that the Climats are spread between the right and left banks of the River Serein, a tributary of the Yonne which flows through the region from south to north.
Chablis Grand Cru (2% of production)
The terroirs, formed in the Upper Jurassic era, 150 million years ago, are composed of limestone and marl with Exogyra virgula, tiny oyster fossils. Chablis Grand Cru is one of the rare French AOC wines to make reference to its geology, notably the Kimmeridgean age.
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