Marlbrook Marl
Marlbrook Marl is a geologic formation in Arkansas, United States. It preserves fossils from the Late Cretaceous period. The formation lies above the Annona Chalk and below the Saratoga Formation and is typically 50 to 220 feet thick. The type section was named by geologist Robert Thomas Hill.
This page was last edited on 2 February 2026, at 10:48 (CET).