496 NEW YO&K state MUSEUM 



is however often a respectable amount of till, and many areas are 

 at least thinly covered with morainic material. But on the whole 

 glacial removal seems to have been in excess of glacial deposit. 



The main areas of morainic accumulation are shown on the ac- 

 companying map, though not fully, only those sufficiently extensive 

 to render the areal mapping somewhat uncertain being shown. It 

 may be said in general that the main valleys all have their floors 

 banked up with drift, and that the north slopes of the ridges are 

 apt to be similarly encumbered. The matrix of the deposits is 

 quite sandy, or gravelly, as is usual in the Adirondacks, but they 

 contain many large boulders, and there are often large boulder 

 trains on the surface. 



A moraine of considerable prominence runs across the northern 

 portion of the quadrangle from Tupper lake to Axton and beyond. 

 There is a tendency to kame development along its front, as is 

 common in the district, and at Moody is a notable instance of the 

 sort [see map and pi. 10]. The waves of the lake have eaten away 

 its end producing a 20 foot sand bluff, showing cross-bedded sands 

 with a coarse gravel streak near the top. A short distance back it 

 runs up to a conical summit, 150 feet above the lake. Yet further 

 east it runs up against the moraine, two flat terraces appearing 

 during this rise, their surface covered with gravel and occasional 

 cobbles, but no large boulders. This fringe of water-laid material 

 borders the moraine on the south for a considerable distance. 

 About Tupper Lake Junction is another development of sands, and 

 Little Wolf pond, whose southern shore appears at the north margin 

 of the sheet, is held up at the south by these sands. A great sand 

 and gravel terrace, with occasional large boulders extends up the 

 Cold river valley, banked up against the anorthosite hills beyond, 

 and seems a true kame terrace. 



The broad Grenville valley belt of the quadrangle is rather 

 heavily moraine covered. The local character of the drift is empha- 

 sized here since Grenville boulders abound, but elsewhere are scarce 

 or absent, so that they can be used rather confidently for areal 

 mapping. Throughout the gneissic area also the low grounds and 

 the gentle hill slopes are moraine covered. The accumulations are 

 in general not large, nor do they tend prominently to the ridge type. 

 There is no indication within the quadrangle limits of any pro- 

 tracted pause during the ice withdrawal. 



Numerous cuts in till are shown along many o( the roads, espe- 



