Age

Lithic description

Thickness, m

Hydrogeology

Quaternary

Loose coarse quartz sand and flinty pebbles

600

Aquifer

Pliocene

Pyretic and rarely fossiliferous marine clay

200

Aquiclude

Miocene

Sandy and marly limestone, sands and clays of marine origin

200

Aquifer

Oligocene

Fluviatile and fluviomarine sandy series capped by basalt rocks

250

Aquifer

Eocene

Dolomitic, sandy, marly and chalky limestone with clay and sand beds in the upper portion

300

Aquifer