Glaciated Appalachian Plateau: Till Shadows on Hills

See allHide authors and affiliations

Science  17 Jun 1966:
Vol. 152, Issue 3729, pp. 1617-1618
DOI: 10.1126/science.152.3729.1617


North slopes are twice as steep as south slopes on the hills of central New York. This asymmetry is caused by unequal till thickness—3.6 meters on north slopes and 27.6 meters on south slopes. Previous workers interpreted the hills as being of bedrock sculptured by glacial erosion, with till 0.9 to 3 meters thick.