Self-sea chalk deposits - A global perspective

In 1822, d'Omalius d'Halloy proposed the formal name "Cretaceous" for northwest European<br>strata previously known as the chalk formation. Had rock of this age first been studied in either the<br>Southem or Western Hemisphere another name would undoubtedly have been established because chalky<br>facies neither dominate the Cretaceous System nor are restricted to it.