Wisconsinan Age of the Titusville Till (formerly called "Inner Illinoian"), Northwestern Pennsylvania

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Science  09 Apr 1965:
Vol. 148, Issue 3667, pp. 234-235
DOI: 10.1126/science.148.3667.234


Peat discovered below drift near Titusville, Pennsylvania, formerly called "inner Illinoian," has a carbon-14 age of 31,400 ± 2,100 years. The overlying drift, herein named Titusville Till, is therefore not Illinoian but is "late early Wisconsinan" or late Altonian of the Lake Michigan lobe classification.