| Six exposures of the Manlius Formation have been measured over 50 km from the west side of the Hudson River Valley. Five distinct subfacies of the Manlius Formation have been recognized. It was possible to correlate the vertical distribution of the subfacies around the measured sections and produce a notable "layer cake" stratigraphy. There is no evidence that the Manlius Formation grades laterally into the Coeymans Formation, as proposed by Rickard (1962). Moreover, there is no angular unconformity separating the Manlius Formation from the Coeymans Formation, as proposed by Ebert and Matteson (2010). Although the general stratigraphy proposed here follows a layer cake model proposed by Demicco and Smith (2009), it fails to fully extend that model to this part of the exposure belt. This may be due to regional faults in the Hudson Valley that cut through the Manlius Formation making it impossible to get a complete, non-duplicated section. |
