Table 1.  Adapted from La Porte’s and Bordeaux’s Environmental Interpretations of the New York Late Silurian – Middle Devonian Formations.
 

Period	Group	Formation	Part of shallow sea (Sedimentary environment)
Middle Devonian	-	Onondaga	Inner shelf, transition from marine environment to a rejuvenated fluvial environment
Late Devonian	Tristates Group	Schoharie	Middle shelf
		Carlisle Center	Middle shelf
		Esopus	Outer shelf/deep ocean
		Glenerie	Middle shelf
	Helderberg Group	Port Ewen	Deep marine depositional environment well off shore, near outer shelf/slope area
		Alsen	Middle shelf area with indication of alternation between anoxic and aerobic conditions
		Becraft	Inner shelf below wave base, with indication of alternation between anoxic and aerobic conditions
		New Scotland	Subtidal area below wave base with a great influx of terrigenous detritus which cam from a distant easterly or northeasterly source
		Kalkberg	Shallow water, open marine environment which developed on an extensive shelf seaward
		Coeymans	Wide belt of shallow submerged crinoid mounds and banks which served as and effective though discontinuous barrier for circulation
Late Silurian		Manlius	Supratidal, intertidal and shallow subtidal environments within a broad shelf lagoon