C 14 dating ; Deglaciation ; Geochronology ; Lateglacial ; Palynology ; Pollen diagram ; Quaternary ; United States of America ; Wisconsin
A new and significant site of organic silty sand has been found beneath the Valders till at Valders Quarry in northeastern Wisconsin. This is the earliest known late-glacial site associated with red till ice advances in the western Great Lakes area
[b1] Dept. of Geology and Geophysics, University of Wisconsin, Madison, Etats-Unis