Planktonic Foraminifera And The Cretaceous-Tertiary Boundary In Central 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...

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Bibliographic Details
Main Author: Jordan, R.R.
Format: Report
Language:English
Published: Newark, DE: Delaware Geological Survey, University of Delaware 1962
Subjects:
Planktonic
Foraminifera
Cretaceous-Tertiary
Central Delaware
Dover
Planktonic foraminifera
Online Access:http://udspace.udel.edu/handle/19716/2796
Description
Summary: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.

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