WISCONSINAN REFUGIA AND THE GLACIAL HISTORY OF EASTERN BAFFIN-ISLAND,ARCTIC CANADA - COUPLED EVIDENCE FROM COSMOGENIC ISOTOPES AND LAKE-SEDIMENTS

New data constrain the tinting and character of glaciation of eastern Baffin Island, Arctic Canada. Lake sediments radiocarbon dated to betw een lit and >52 ka, coupled to Be-10 and Al-26 exposure ages >35 ka fr om adjacent moraines and bedrock, demonstrate that some coastal upland s remained above the limits of continental glaciation throughout oxyge n isotope stage 2, At lower elevations, exposure ages from a flight of distinct lateral moraines range from 10 to 35 ha, and imply that low- gradient outlet glaciers reached the outer coast during the late Wisco nsinan, Collectively, these results reconcile terrestrial evidence for the presence of ice-free refugia through the late Wisconsinan with ma rine evidence for extensive outlet glaciers in the major fiords and ba gs of eastern Baffin Island.