350 J. D. IVES 



requested lo make observations for the Geographical Branch, on landing, 

 was unable to detect any evidence of glaciation. Clearly these islands are an 

 obvious place to look for evidence of niinataks at the Pleistocene maxima 

 because of their altitude and position. 





Fig. 9. The summit of Lady Franklin Island as seen from a helicopter. The cliff 

 descends more than 200 m vertically to the sea (black in the photo). The surface 

 is mantled with mature detritus. {Photo by Canadian Hydrographic Service, 



September 1961). 



DISCUSSION 



The presentation of the evidence has been restricted to Labrador-Ungava 

 and Baffin Island with a few cursory remarks being devoted to the Shick- 

 shock Mountains. Nothing can be said about the Devon-Ellesmere islands 

 sector. 



A few major points emerge from the available evidence: first, it seems cer- 

 tain that most of the highest summits in northern Labrador, if not all of them, 

 have been inundated at some time prior to the Last Glaciation, although no 

 evidence is available for Baffin Island; secondly, either the detrital trim line, 

 or the Saglek moraines, may be taken to mark the upper limit of the Last 

 Glaciation in Labrador, which would indicate that large areas remained ice- 

 free; finally, conditions may have been very similar in Baffin Island, and by 

 extsion, along the entire eastern Canadian seaboard. 



Much more work remains to be done before anv of these contentions can 



