The different rock types that have been represented in the geological map constitute the called cartographic units. Each one is represented in the map by a different color and an epigraph that identifies them. The characteristics of each unit are explained on the legend.

The most frequent rocks in Catalonia

Sedimentary rock

Detrital

Non detrital: carbonatic

Non detrital: evaporitic

Non detrital: organic

Igneous rock

Metamorphic rock

The most frequent fossils in Catalonia