Stratigraphic unit

Formation name/Lithology

Lower

Cretaceous

Jurassic

Albian

Aptian

Barremian

Hauter-Barrem

Hauterivian

Valanginian

Berriasian

Tithonian

Lower Zebbag/Limestone and domlomite

Orbata/Dolomite, limestone and marl

Sidi Aich/Sand and sandstone

Bouhedma/Clay and dolomite

Boudinar/Sand, sadstone and clay

Melloussi/Clay, limestone and sand

Sidi Khlif/Clay and limestone

Nara/Limestone, dolomite and clay