The crustal movement in progress at the present time has been determined at 106 points in the Great Lakes area. The entire area, except for the extreme northerly part of Lake Superior, is subsiding with respect to sea level. The methods employed and the results obtained are discussed, but no conclusion as to the cause of the movement is reached.

This content is PDF only. Please click on the PDF icon to access.

First Page Preview

First page PDF preview
You do not have access to this content, please speak to your institutional administrator if you feel you should have access.