@article {100, title = {Middle Wisconsin glacial advance into the Appalachian Plateau, Sixmile Creek, Tompkins Co., NY}, journal = {Quaternary Research}, volume = {80}, year = {2013}, pages = {522-533}, abstract = {Areal mapping of the middle Wisconsin varved clay site along Sixmile Creek near Ithaca, New York, has revealed a much more widespread and varied array of sediments than previously thought. Lacustrine clays, some varved, are interbedded with sands and gravels interpreted as sub-aqueous fan deposits, and both are overlain by a deformation till. Nine radiocarbon dates indicate a 34{\textendash}37 14C ka BP age for the lacustrine sediment, with the deformation till less than a few thousand years younger. Beneath this sequence is a deposit dated at {\textpm} 42 14C ka BP. Both strata represent a tundra climate with a mean July temperature of about 10{\textdegree}C. The Sixmile Creek deformation till must correlate with the 35 14C ka BP till along the Genesee River, 125 km to the NW, and defines a Cherrytree stade glacial advance into the Appalachian Plateau, much further south than what has generally been accepted. Such an advance would require drainage from a proglacial lake in the western Ontario basin to flow westward instead of northeastward. The Sixmile strata suggest a colder than accepted middle Wisconsin stage. Recent data indicate that this stage is one of progressive cooling, with large climatic fluctuations.}, issn = {0033-5894}, doi = {10.1016/j.yqres.2013.08.008}, url = {http://www.sciencedirect.com/science/article/pii/S0033589413001002}, author = {Karig, Daniel E. and Miller, Norton G.} }