GEOLOGY OF OGDEXSBURG 6l 



district above sea level, and carried the end of the St Lawrence 

 estuary eastward to its present position, but also tipped the old 

 shore lines of the vanished bodies of water, so that today they are 

 no longer horizontal, but have a slowly increasing altitude as 

 followed northeast. The entire Ogdensburg quadrangle is too low 

 to exhibit any of these main shore lines. 



