The Crato Member is one of the most important stratigraphic units of the Araripe Basin due to its fossil content, its context analogous to the Brazilian “Pre-Salt Layers”, and its use as covering stone. Facies and petrographic analyses were combined in our study of a section of the Crato Member in Nova Olinda (State of Ceará, Brazil), aiming to investigate its depositional and diagenetic history. Thus, we analy...