Date of Award

Fall 1996

Document Type


Degree Name

Master of Science (MS)


Ocean & Earth Sciences



Committee Director

Diane L. Kamola

Committee Member

Donald P. Swift

Committee Member

Carl Koch

Committee Member

G. Richard Whittecar

Call Number for Print

Special Collections LD4331.G4 B63


The Miocene St. Marys Formation at Calvert Cliffs, Maryland is divided into four depositional packages made up of marine fades representing shallow shelf through intertidal conditions. These depositional packages are separated by five laterally persistent surfaces and were defined based on detailed depositional fades analysis of 24 measured sections, averaging 17 meters thick. These four packages make up two marine sequences, stratigraphic units bound above and below by surfaces of sea level fall. The lower sequence is composed of a single depositional package, while the upper sequence is composed of three upward-shallowing depositional packages (i.e. para-sequences). A fifth depositional package recognized in the uppermost portion of the cliffs initially believed to be of St. Marys age is found to contain fossil evidence more consistent with an Eastover Formation age.


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