Tectonic Fit

Fragments of an old fold mountain belt between 450 and 400 million years ago are found on widely separated continents today. Pieces of the Caledonian fold mountain belt are found in Greenland, Canada, Ireland, England, Scotland and Scandinavia. When these land masses are re-assembled the mountain belt forms a continuous linear feature.


Image: Wikipedia. Copyright Woudloper 
Caledonian/Acadian mountain belts at the end of the Caledonian. Present day coastlines in grey.

Geological fit Glacial deposits