Najpomembnejši geološki dogodek na meji cenomanij-turonij je bil evstatični dvig morske gladine (Haq et al., 1987), ki je povzročil potopitev številnih platform in grebenov (Arthur & Schlanger, 1979; Jenkyns, 1985, 1991; Weimer, 1988; Hine, 1993).
The most important geologic event at the Cenomanian-Turonian boundary was an eustatic uplift of the sea level (Haq et al., 1987) that caused submersion of numerous platforms and reefs (Arthur & Schlanger, 1979; Jenkyns, 1985, 1991; Weimer, 1988; Hine, 1993).