Upper and lower lake beds, which interfinger with West Canada till (first used) are here called Newport beds. Name for these lacustrine sediments is "useful, though not specific." Sediments are stratified, generally fine-grained units and are intercalated with several till sheets. Underlies Hawthorne till (first used). Overlies White Creek till (first used).

Source: GNU records (USGS DDS-6; Reston GNULEX).

Middleville Formation here newly defined to include all of the pre-Valley Heads deposits currently identified in the West Canada Valley, east-central NY. These include the basal White Creek Diamicton (new name), the lower Newport Beds (new name), the West Canada Diamicton (new name) and the upper Newport Beds. Lower Newport Beds described as a sequence that consists primarily of laminated silt and clay. Near Newport, the West Canada "A" Diamicton occurs between the basal and top units of the lower Newport Beds. The upper Newport Beds consist predominantly of varves and turbidites. Provenance of the Newport Beds changes from Adirondack, to Mohawk lobe, and back to Adirondack. Middleville Formation is at least as old as the Nissouri stadial (>15.5 ka).

Source: GNU records (USGS DDS-6; Reston GNULEX).