458 



THE ICE AGE IN NORTH AMERICA. 



its constitution, in its associated deposits, and in its wide sep- 

 aration from the outermost drift limit, this morainic belt cor- 

 responds to the extensive morainic belt of America, which 

 extends from Dakota to the Atlantic Ocean. That the one 

 formation corresponds to the other does not admit of doubt. 

 In all essential characteristics they are identical in character. 

 What may be their relations in time remains to be determined. 



Fig. 124 — Contorted drift of the Cromer ridge; the terminal moraine of the North Sea ice. 



The glaciated areas of the Pyrenees and the Alps are inde- 

 pendent of that covered by Scandanavian ice. In France, 

 small glaciers were to be found in the higher portions of the 

 Auvergne, of the Morvan, of the Vosges, and of the Cevennes; 

 while from the Pryenees, glaciers extended northward through- 

 out nearly their whole extent. The ice-stream descending 

 from the central mass of Mt. Maladetta through the upper 

 valley of the Garonne, was joined bj^ several tributaries, and 

 attained a length of about forty-five miles. 



