Planktonic Foraminifera And The Cretaceous-Tertiary Boundary In Central Delaware
Newark, DE: Delaware Geological Survey, University of Delaware
The uppermost Cretaceous and lowermost Tertiary planktonic Foraminifera obtained from cores taken in a deep well near Dover, Delaware are studied. The Cretaceous foraminifers are of the Heterohelix-Globotruncana assemblage and are probably of late Maescrichtian age. The Danian Globorotalia compressa - Globigerinoides daubjergensis zone lies immediately above. The Cretaceous-Tertiary boundary is at a depth of approximately 980 feet and lies within a gray, glauconitic silt.
Planktonic , Foraminifera , Cretaceous-Tertiary , Central Delaware