Title: Cretaceous-Tertiary boundary in New Jersey, Delaware, and eastern Maryland
Description: "The basal Tertiary Hornerstown Sand unconformably overlaps progressively lower truncated beds in the underlying Cretaceous section southwestward through New Jersey, Delaware, and eastern Maryland."
Subjects: Stratigraphic Geology, Geology
Places: New Jersey, Delaware, Maryland
Time periods: Cretaceous, Tertiary