From Ohio History Central
The Canadian Shield, also called the Laurentian Plateau, is a large geological shield covered by a thin layer of soil that forms the nucleus of the North American or Laurentia craton.
(Reusing this file)
Click on a date/time to view the file as it appeared at that time.
|current||20:05, 24 April 2013||301 × 400 (55 KB)||Maintenance script||Importing image file|
- You cannot overwrite this file.
- Edit this file using an external application (See the setup instructions for more information)