The Château Clos de Sarpe vineyard covers 3.7 ha in one block, planted on the clay-limestone Sarpe plateau (on Asteria limestone), with a south, south-east exposure (one too many?). Very consistent terroir at the heart of the greatest terroirs of the appellation. Château Trottevieille, Château Troplong-Mondot, Château Haut-Sarpe, Château Sansonnet, etc.
A pedological study carried out at Château Clos de Sarpe revealed clay-limestone formations of the “molasses du Fronsadais” type (The higher part of this molasse dates from the late Oligocene epoch, making it about 25 million years old) and of the “molasses de l’Agenais” type (This molasse is mixed with weathering deposits from the Asteria limestone.
This limestone, dating from the early Oligocene (about 30 million years old), has been regularly seen in boreholes and pits.
The Molasse de l’Agenais (clay limestone) “has a surface soil thickness of less than 50 cm, resting directly on the limestone rock. The rock is systematically present at a depth of less than 50 cm. These are very well-drained soils, and the root system regularly penetrates the rock.