A large concentration of Cretaceous ferruginous limestones has also been found near Bakouma.

The hilly regions surrounding the Maya Mountains are formed from Cretaceous limestone.

The basement is Cretaceous limestone and shale which are unconformably below the Tertiary fill of the basin.

There is also a narrow sinkhole in a fault of lower Cretaceous limestone which goes down at least a further 512 m.

Cretaceous limestones and iron ores were discovered near the village of Vărăncău.

Mount Orjen is built up from pure Cretaceous limestone.

The plateau was formed of Karst limestone from the Lower Cretaceous covered by loess material.

The caves are formed because of the Cretaceous limestone throughout the caves, that is up to 400 metres (1300 feet) thick at some points.

At the southern end, some Cretaceous limestone remained, however.

Disconformably above these beds are layers of Lower Cretaceous limestone, siltstone, sandstone, and conglomerate.