Chloritic Marl

Chloritic Marl, a thin bed of white or pale-yellow marl, sometimes indurated, containing dark-green glauconitic grains, phosphatic nodules, and iron pyrites. It belongs to the Cretaceous system, coming between the Upper Greensand and Chalk Marl. It is characterised by the abundance of Scaphites æqualis, a species of ammonites. It is confined to the southern districts of England occupied by the Cretaceous rocks.