The geology of the Lodève Basin
The area between the Montagne Noire, the Causses and the
Languedoc plain is called the Lodève Basin. It is a continuation of
the Graissessac Basin where coal beds from the Stephanian are exploited in
open pits. About the stratigraphy of the Lodève Basin is no unanimity.
But the 'Autunien gris', to which the rock of the quarry Les Tuilières
belongs, is always placed in the Upper Autunian. The age is thus about 280